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(max-width: 37.5rem){.ssrcss-2u16sf-GlobalNavigationContent{padding:0 0.25rem;}}.ssrcss-1qjbknt-GlobalNavigationItem{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;margin-top:-0.25rem;-webkit-align-self:center;-ms-flex-item-align:center;align-self:center;}@media (min-width: 18.75rem){.ssrcss-1qjbknt-GlobalNavigationItem{-webkit-order:1;-ms-flex-order:1;order:1;width:auto;}}@media (min-width: 37.5rem){.ssrcss-1qjbknt-GlobalNavigationItem{-webkit-order:0;-ms-flex-order:0;order:0;}}.ssrcss-1qjbknt-GlobalNavigationItem:hover>*>*::after,.ssrcss-1qjbknt-GlobalNavigationItem:focus>*>*::after,.ssrcss-1qjbknt-GlobalNavigationItem[data-open='true']{width:100%;opacity:100%;}.ssrcss-i66k04-NavigationLink-LogoLink{display:block;height:100%;line-height:calc(4rem - 0.5rem);-webkit-text-decoration:inherit;text-decoration:inherit;color:inherit;white-space:nowrap;text-align:center;padding:0;margin-top:-0.25rem;width:100%;}.ssrcss-i66k04-NavigationLink-LogoLink:hover 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18.75rem){.ssrcss-sk8r9t-GlobalNavigationItem{-webkit-order:0;-ms-flex-order:0;order:0;width:auto;}}@media (min-width: 37.5rem){.ssrcss-sk8r9t-GlobalNavigationItem{-webkit-order:0;-ms-flex-order:0;order:0;width:100%;}}.ssrcss-sk8r9t-GlobalNavigationItem:hover>*>*::after,.ssrcss-sk8r9t-GlobalNavigationItem:focus>*>*::after,.ssrcss-sk8r9t-GlobalNavigationItem[data-open='true']{width:100%;opacity:100%;}.ssrcss-j17vi8-AccountOptionsList{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;padding-right:3rem;}@media (min-width: 37.5rem){.ssrcss-j17vi8-AccountOptionsList{padding-right:0;}}.ssrcss-j17vi8-AccountOptionsList >li{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;}.ssrcss-khi21n-GlobalNavigationProduct-GlobalNavigationNonProductItem-GlobalNavigationAccount{color:#000000;text-align:center;height:3.75rem;min-width:2.75rem;display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;text-align:left;}.ssrcss-khi21n-GlobalNavigationProduct-GlobalNavigationNonProductItem-GlobalNavigationAccount:focus>*>*::after,.ssrcss-khi21n-GlobalNavigationProduct-GlobalNavigationNonProductItem-GlobalNavigationAccount[data-open='true']{width:100%;opacity:100%;}@media (min-width: 37.5rem){.ssrcss-khi21n-GlobalNavigationProduct-GlobalNavigationNonProductItem-GlobalNavigationAccount{min-width:3rem;}}@media (min-width: 80rem){.ssrcss-khi21n-GlobalNavigationProduct-GlobalNavigationNonProductItem-GlobalNavigationAccount{width:11rem;}}.ssrcss-5fw2ee-AccountComponentWrapper{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-box-pack:center;-ms-flex-pack:center;-webkit-justify-content:center;justify-content:center;position:relative;min-width:inherit;width:inherit;}.ssrcss-uwr32o-StyledAccountPlaceholderComponent{height:100%;width:100%;-webkit-align-items:center;-webkit-box-align:center;-ms-flex-align:center;align-items:center;text-align:left;display:inline-block;position:absolute;}html.no-js 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(min-width: 63rem){.ssrcss-1lgb55w-Skeleton-StyledAccountPlaceholderIcon{width:1.75rem;height:1.75rem;}}.ssrcss-1z04xmt-StyledLoadingPlaceHolderTextWrapper{display:none;}@media (min-width: 63rem){.ssrcss-1z04xmt-StyledLoadingPlaceHolderTextWrapper{display:-webkit-inline-box;display:-webkit-inline-flex;display:-ms-inline-flexbox;display:inline-flex;height:100%;width:100%;-webkit-align-items:center;-webkit-box-align:center;-ms-flex-align:center;align-items:center;margin-left:0.5rem;}}.ssrcss-82dxfl-Skeleton-StyledLoadingPlaceHolderText{background-color:#F6F6F6;overflow:hidden;width:100%;border-radius:5%;height:0.875rem;}.ssrcss-ancd6v-NavigationLink-AccountLink{display:block;height:100%;line-height:calc(4rem - 0.5rem);-webkit-text-decoration:inherit;text-decoration:inherit;color:inherit;white-space:nowrap;text-align:center;pointer-events:none;opacity:0;box-sizing:border-box;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:1.25rem;position:relative;-webkit-text-decoration:none;text-decoration:none;display:inline-block;text-align:center;margin-right:0.3125rem;}.ssrcss-ancd6v-NavigationLink-AccountLink:hover .eki2hvo16::after,.ssrcss-ancd6v-NavigationLink-AccountLink:focus .eki2hvo16::after,.ssrcss-ancd6v-NavigationLink-AccountLink[data-open='true'] .eki2hvo16::after{width:100%;opacity:1;}@media (min-width: 23.4375rem){.ssrcss-ancd6v-NavigationLink-AccountLink{text-align:center;min-width:2.5rem;}}.ssrcss-ancd6v-NavigationLink-AccountLink::after{content:'';display:block;background-color:#0071F1;position:absolute;right:0;left:0;bottom:0.625rem;height:0.125rem;width:66%;opacity:0;}@media (forced-colors: active){.ssrcss-ancd6v-NavigationLink-AccountLink:hover,.ssrcss-ancd6v-NavigationLink-AccountLink:focus,.ssrcss-ancd6v-NavigationLink-AccountLink[data-open='true']{margin-bottom:-1px;border-bottom:1px solid currentcolor!important;}}.ssrcss-ancd6v-NavigationLink-AccountLink:hover::after,.ssrcss-ancd6v-NavigationLink-AccountLink:focus::after,.ssrcss-ancd6v-NavigationLink-AccountLink[data-open='true']::after{width:100%;opacity:1;}@media (prefers-reduced-motion: no-preference){.ssrcss-ancd6v-NavigationLink-AccountLink::after{-webkit-transition:width 0.2s,opacity 0.2s;transition:width 0.2s,opacity 0.2s;transition-timing-function:cubic-bezier(0.75, 0, 0.15, 1);}}html.no-js .ssrcss-ancd6v-NavigationLink-AccountLink{opacity:1;pointer-events:all;}@media (min-width: 18.75rem){.ssrcss-ancd6v-NavigationLink-AccountLink{min-width:inherit;margin-right:0;}}@media (min-width: 23.4375rem){.ssrcss-ancd6v-NavigationLink-AccountLink{min-width:3rem;text-align:center;}}@media (min-width: 63rem){.ssrcss-ancd6v-NavigationLink-AccountLink{width:8.5rem;text-align:left;}}@media (min-width: 80rem){.ssrcss-ancd6v-NavigationLink-AccountLink{width:11rem;}}.ssrcss-1xrtdyt-AccountIconWrapper{display:inline-block;width:2rem;height:2rem;vertical-align:-0.6875rem;}@media (min-width: 63rem){.ssrcss-1xrtdyt-AccountIconWrapper{width:1.75rem;height:1.75rem;vertical-align:-0.5625rem;}}.ssrcss-xi5oyi-StyledIcon{display:block;height:100%;width:100%;fill:currentcolor;}.ssrcss-qgttmg-AccountText{position:absolute;overflow:hidden;margin:0;width:1px;height:1px;-webkit-clip-path:inset(100%);clip-path:inset(100%);clip:rect(1px, 1px, 1px, 1px);white-space:nowrap;}@media (min-width: 63rem){.ssrcss-qgttmg-AccountText{position:static;overflow:visible;width:auto;height:auto;-webkit-clip-path:none;clip-path:none;clip:auto;white-space:inherit;margin-left:0.5rem;}}.ssrcss-19sye53-VerticalSeparator{display:none;}@media (min-width: 37.5rem){.ssrcss-19sye53-VerticalSeparator{display:block;border-left:0.0625rem solid #E6E8EA;height:1.5rem;margin-top:1rem;}}.ssrcss-1blxct3-NavigationBarLinkList-En{-webkit-flex:auto;-ms-flex:auto;flex:auto;display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-box-pack:justify;-webkit-justify-content:space-between;justify-content:space-between;}.ssrcss-1blxct3-NavigationBarLinkList-En >li{display:none;}@media (min-width: 37.5rem){.ssrcss-1blxct3-NavigationBarLinkList-En >li:nth-of-type(8){display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-box-pack:space-evenly;-ms-flex-pack:space-evenly;-webkit-justify-content:space-evenly;justify-content:space-evenly;}}@media (min-width: 37.5rem){.ssrcss-1blxct3-NavigationBarLinkList-En >li:nth-of-type(1),.ssrcss-1blxct3-NavigationBarLinkList-En li:nth-of-type(2),.ssrcss-1blxct3-NavigationBarLinkList-En li:nth-of-type(3){display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-box-pack:space-evenly;-ms-flex-pack:space-evenly;-webkit-justify-content:space-evenly;justify-content:space-evenly;}}@media (min-width: 37.5rem){.ssrcss-1blxct3-NavigationBarLinkList-En >li:nth-of-type(4){display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-box-pack:space-evenly;-ms-flex-pack:space-evenly;-webkit-justify-content:space-evenly;justify-content:space-evenly;}}@media (min-width: 41.25rem){.ssrcss-1blxct3-NavigationBarLinkList-En >li:nth-of-type(5){display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-box-pack:space-evenly;-ms-flex-pack:space-evenly;-webkit-justify-content:space-evenly;justify-content:space-evenly;}}@media (min-width: 45.5rem){.ssrcss-1blxct3-NavigationBarLinkList-En >li:nth-of-type(6){display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-box-pack:space-evenly;-ms-flex-pack:space-evenly;-webkit-justify-content:space-evenly;justify-content:space-evenly;}}@media (min-width: 48rem){.ssrcss-1blxct3-NavigationBarLinkList-En >li:nth-of-type(7){display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-box-pack:space-evenly;-ms-flex-pack:space-evenly;-webkit-justify-content:space-evenly;justify-content:space-evenly;}}.ssrcss-18tl6fu-GlobalNavigationProduct{color:#000000;text-align:center;height:3.75rem;margin-left:0.5rem;}.ssrcss-18tl6fu-GlobalNavigationProduct:focus>*>*::after,.ssrcss-18tl6fu-GlobalNavigationProduct[data-open='true']{width:100%;opacity:100%;}@media (min-width: 37.5rem){.ssrcss-18tl6fu-GlobalNavigationProduct{min-width:3rem;}}.ssrcss-1yfeg7m-NavigationLink{display:block;height:100%;line-height:calc(4rem - 0.5rem);-webkit-text-decoration:inherit;text-decoration:inherit;color:inherit;white-space:nowrap;text-align:center;}.ssrcss-1yfeg7m-NavigationLink:hover .eki2hvo16::after,.ssrcss-1yfeg7m-NavigationLink:focus .eki2hvo16::after,.ssrcss-1yfeg7m-NavigationLink[data-open='true'] .eki2hvo16::after{width:100%;opacity:1;}@media (min-width: 23.4375rem){.ssrcss-1yfeg7m-NavigationLink{text-align:center;min-width:2.5rem;}}.ssrcss-1rvz278-NavItemHoverState{position:relative;-webkit-text-decoration:none;text-decoration:none;display:inline-block;}.ssrcss-1rvz278-NavItemHoverState::after{content:'';display:block;background-color:#000000;position:absolute;right:0;left:0;bottom:0.375rem;height:0.125rem;width:66%;opacity:0;}@media (forced-colors: active){.ssrcss-1rvz278-NavItemHoverState:hover,.ssrcss-1rvz278-NavItemHoverState:focus,.ssrcss-1rvz278-NavItemHoverState[data-open='true']{margin-bottom:-1px;border-bottom:1px solid currentcolor!important;}}.ssrcss-1rvz278-NavItemHoverState:hover::after,.ssrcss-1rvz278-NavItemHoverState:focus::after,.ssrcss-1rvz278-NavItemHoverState[data-open='true']::after{width:100%;opacity:1;}@media (prefers-reduced-motion: no-preference){.ssrcss-1rvz278-NavItemHoverState::after{-webkit-transition:width 0.2s,opacity 0.2s;transition:width 0.2s,opacity 0.2s;transition-timing-function:cubic-bezier(0.75, 0, 0.15, 1);}}.ssrcss-f4w0g1-GlobalNavigationProduct{color:#000000;text-align:center;height:3.75rem;}.ssrcss-f4w0g1-GlobalNavigationProduct:focus>*>*::after,.ssrcss-f4w0g1-GlobalNavigationProduct[data-open='true']{width:100%;opacity:100%;}@media (min-width: 37.5rem){.ssrcss-f4w0g1-GlobalNavigationProduct{min-width:3rem;}}.ssrcss-c32wmt-NavItemHoverState{position:relative;-webkit-text-decoration:none;text-decoration:none;display:inline-block;}.ssrcss-c32wmt-NavItemHoverState::after{content:'';display:block;background-color:#EB1212;position:absolute;right:0;left:0;bottom:0.375rem;height:0.125rem;width:66%;opacity:0;}@media (forced-colors: active){.ssrcss-c32wmt-NavItemHoverState:hover,.ssrcss-c32wmt-NavItemHoverState:focus,.ssrcss-c32wmt-NavItemHoverState[data-open='true']{margin-bottom:-1px;border-bottom:1px solid currentcolor!important;}}.ssrcss-c32wmt-NavItemHoverState:hover::after,.ssrcss-c32wmt-NavItemHoverState:focus::after,.ssrcss-c32wmt-NavItemHoverState[data-open='true']::after{width:100%;opacity:1;}@media (prefers-reduced-motion: no-preference){.ssrcss-c32wmt-NavItemHoverState::after{-webkit-transition:width 0.2s,opacity 0.2s;transition:width 0.2s,opacity 0.2s;transition-timing-function:cubic-bezier(0.75, 0, 0.15, 1);}}.ssrcss-hv3vcc-NavItemHoverState{position:relative;-webkit-text-decoration:none;text-decoration:none;display:inline-block;}.ssrcss-hv3vcc-NavItemHoverState::after{content:'';display:block;background-color:#FFD230;position:absolute;right:0;left:0;bottom:0.375rem;height:0.125rem;width:66%;opacity:0;}@media (forced-colors: active){.ssrcss-hv3vcc-NavItemHoverState:hover,.ssrcss-hv3vcc-NavItemHoverState:focus,.ssrcss-hv3vcc-NavItemHoverState[data-open='true']{margin-bottom:-1px;border-bottom:1px solid currentcolor!important;}}.ssrcss-hv3vcc-NavItemHoverState:hover::after,.ssrcss-hv3vcc-NavItemHoverState:focus::after,.ssrcss-hv3vcc-NavItemHoverState[data-open='true']::after{width:100%;opacity:1;}@media (prefers-reduced-motion: no-preference){.ssrcss-hv3vcc-NavItemHoverState::after{-webkit-transition:width 0.2s,opacity 0.2s;transition:width 0.2s,opacity 0.2s;transition-timing-function:cubic-bezier(0.75, 0, 0.15, 1);}}.ssrcss-8y8dal-NavItemHoverState{position:relative;-webkit-text-decoration:none;text-decoration:none;display:inline-block;}.ssrcss-8y8dal-NavItemHoverState::after{content:'';display:block;background-color:#AAFF00;position:absolute;right:0;left:0;bottom:0.375rem;height:0.125rem;width:66%;opacity:0;}@media (forced-colors: active){.ssrcss-8y8dal-NavItemHoverState:hover,.ssrcss-8y8dal-NavItemHoverState:focus,.ssrcss-8y8dal-NavItemHoverState[data-open='true']{margin-bottom:-1px;border-bottom:1px solid currentcolor!important;}}.ssrcss-8y8dal-NavItemHoverState:hover::after,.ssrcss-8y8dal-NavItemHoverState:focus::after,.ssrcss-8y8dal-NavItemHoverState[data-open='true']::after{width:100%;opacity:1;}@media (prefers-reduced-motion: no-preference){.ssrcss-8y8dal-NavItemHoverState::after{-webkit-transition:width 0.2s,opacity 0.2s;transition:width 0.2s,opacity 0.2s;transition-timing-function:cubic-bezier(0.75, 0, 0.15, 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1);}}.ssrcss-45jvgy-NavItemHoverState{position:relative;-webkit-text-decoration:none;text-decoration:none;display:inline-block;}.ssrcss-45jvgy-NavItemHoverState::after{content:'';display:block;background-color:#0052A1;position:absolute;right:0;left:0;bottom:0.375rem;height:0.125rem;width:66%;opacity:0;}@media (forced-colors: active){.ssrcss-45jvgy-NavItemHoverState:hover,.ssrcss-45jvgy-NavItemHoverState:focus,.ssrcss-45jvgy-NavItemHoverState[data-open='true']{margin-bottom:-1px;border-bottom:1px solid currentcolor!important;}}.ssrcss-45jvgy-NavItemHoverState:hover::after,.ssrcss-45jvgy-NavItemHoverState:focus::after,.ssrcss-45jvgy-NavItemHoverState[data-open='true']::after{width:100%;opacity:1;}@media (prefers-reduced-motion: no-preference){.ssrcss-45jvgy-NavItemHoverState::after{-webkit-transition:width 0.2s,opacity 0.2s;transition:width 0.2s,opacity 0.2s;transition-timing-function:cubic-bezier(0.75, 0, 0.15, 1);}}.ssrcss-wtx82e-NavItemHoverState{position:relative;-webkit-text-decoration:none;text-decoration:none;display:inline-block;}.ssrcss-wtx82e-NavItemHoverState::after{content:'';display:block;background-color:#589E50;position:absolute;right:0;left:0;bottom:0.375rem;height:0.125rem;width:66%;opacity:0;}@media (forced-colors: active){.ssrcss-wtx82e-NavItemHoverState:hover,.ssrcss-wtx82e-NavItemHoverState:focus,.ssrcss-wtx82e-NavItemHoverState[data-open='true']{margin-bottom:-1px;border-bottom:1px solid currentcolor!important;}}.ssrcss-wtx82e-NavItemHoverState:hover::after,.ssrcss-wtx82e-NavItemHoverState:focus::after,.ssrcss-wtx82e-NavItemHoverState[data-open='true']::after{width:100%;opacity:1;}@media (prefers-reduced-motion: no-preference){.ssrcss-wtx82e-NavItemHoverState::after{-webkit-transition:width 0.2s,opacity 0.2s;transition:width 0.2s,opacity 0.2s;transition-timing-function:cubic-bezier(0.75, 0, 0.15, 1);}}.ssrcss-o07jwc-GlobalNavigationProduct{color:#000000;text-align:center;height:3.75rem;}.ssrcss-o07jwc-GlobalNavigationProduct:focus>*>*::after,.ssrcss-o07jwc-GlobalNavigationProduct[data-open='true']{width:100%;opacity:100%;}@media (min-width: 37.5rem){.ssrcss-o07jwc-GlobalNavigationProduct{min-width:3rem;}}@media (min-width: 37.5rem){.ssrcss-o07jwc-GlobalNavigationProduct#more-menu-button{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;max-width:3rem;-webkit-box-pack:end;-ms-flex-pack:end;-webkit-justify-content:flex-end;justify-content:flex-end;}}.ssrcss-1qxzppn-NavigationLink-MenuToggleControlLink{display:block;height:100%;line-height:calc(4rem - 0.5rem);-webkit-text-decoration:inherit;text-decoration:inherit;color:inherit;white-space:nowrap;text-align:center;min-width:1.25rem;margin-top:-0.25rem;}.ssrcss-1qxzppn-NavigationLink-MenuToggleControlLink:hover .eki2hvo16::after,.ssrcss-1qxzppn-NavigationLink-MenuToggleControlLink:focus 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active){.ssrcss-1loutj3-NavItemHoverState:hover,.ssrcss-1loutj3-NavItemHoverState:focus,.ssrcss-1loutj3-NavItemHoverState[data-open='true']{margin-bottom:-1px;border-bottom:1px solid currentcolor!important;}}.ssrcss-1loutj3-NavItemHoverState:hover::after,.ssrcss-1loutj3-NavItemHoverState:focus::after,.ssrcss-1loutj3-NavItemHoverState[data-open='true']::after{width:100%;opacity:1;}@media (prefers-reduced-motion: no-preference){.ssrcss-1loutj3-NavItemHoverState::after{-webkit-transition:width 0.2s,opacity 0.2s;transition:width 0.2s,opacity 0.2s;transition-timing-function:cubic-bezier(0.75, 0, 0.15, 1);}}@media ( min-width: 37.5rem){.ssrcss-1loutj3-NavItemHoverState{width:2rem;}}.ssrcss-13dpa8i-DotsMenuIconWrapper{display:none;}@media (min-width: 37.5rem){.ssrcss-13dpa8i-DotsMenuIconWrapper{display:inline-block;width:1.25rem;height:0.25rem;}.ssrcss-13dpa8i-DotsMenuIconWrapper>svg{vertical-align:0.1875rem;}}.ssrcss-7jj1a6-LastGlobalNavigationItem{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-order:2;-ms-flex-order:2;order:2;-webkit-align-self:center;-ms-flex-item-align:center;align-self:center;padding-left:0;}@media (min-width: 37.5rem){.ssrcss-7jj1a6-LastGlobalNavigationItem{-webkit-order:0;-ms-flex-order:0;order:0;}}@media (min-width: 37.5rem){.ssrcss-7jj1a6-LastGlobalNavigationItem{padding-left:0;}}.ssrcss-1w3za5i-GlobalNavigationItem-GlobalNavigationBurger{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;margin-top:-0.25rem;-webkit-align-self:center;-ms-flex-item-align:center;align-self:center;width:2rem;}@media (min-width: 18.75rem){.ssrcss-1w3za5i-GlobalNavigationItem-GlobalNavigationBurger{width:auto;}}@media (min-width: 37.5rem){.ssrcss-1w3za5i-GlobalNavigationItem-GlobalNavigationBurger{-webkit-order:0;-ms-flex-order:0;order:0;}}.ssrcss-1w3za5i-GlobalNavigationItem-GlobalNavigationBurger:hover>*>*::after,.ssrcss-1w3za5i-GlobalNavigationItem-GlobalNavigationBurger:focus>*>*::after,.ssrcss-1w3za5i-GlobalNavigationItem-GlobalNavigationBurger[data-open='true']{width:100%;opacity:100%;}@media (min-width: 18.75rem){.ssrcss-1w3za5i-GlobalNavigationItem-GlobalNavigationBurger{width:2.5rem;}}@media (min-width: 23.4375rem){.ssrcss-1w3za5i-GlobalNavigationItem-GlobalNavigationBurger{width:3rem;}}@media (min-width: 37.5rem){.ssrcss-1w3za5i-GlobalNavigationItem-GlobalNavigationBurger{display:none;}}.ssrcss-1myt22i-BurgerMenuIconWrapper{display:-webkit-inline-box;display:-webkit-inline-flex;display:-ms-inline-flexbox;display:inline-flex;width:1.5rem;height:1.375rem;vertical-align:-0.5em;-webkit-box-pack:space-evenly;-ms-flex-pack:space-evenly;-webkit-justify-content:space-evenly;justify-content:space-evenly;}@media (min-width: 37.5rem){.ssrcss-1myt22i-BurgerMenuIconWrapper{display:none;}}.ssrcss-fbjoge-GlobalNavigationItem{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;margin-top:-0.25rem;-webkit-align-self:center;-ms-flex-item-align:center;align-self:center;}@media (min-width: 18.75rem){.ssrcss-fbjoge-GlobalNavigationItem{width:auto;}}@media (min-width: 37.5rem){.ssrcss-fbjoge-GlobalNavigationItem{-webkit-order:0;-ms-flex-order:0;order:0;}}.ssrcss-fbjoge-GlobalNavigationItem:hover>*>*::after,.ssrcss-fbjoge-GlobalNavigationItem:focus>*>*::after,.ssrcss-fbjoge-GlobalNavigationItem[data-open='true']{width:100%;opacity:100%;}.ssrcss-1bujrf4-NavigationLink-SearchLink{display:block;height:100%;line-height:calc(4rem - 0.5rem);-webkit-text-decoration:inherit;text-decoration:inherit;color:inherit;white-space:nowrap;text-align:center;background:none;min-width:1.25rem;text-align:center;margin-top:-0.25rem;position:relative;-webkit-text-decoration:none;text-decoration:none;display:inline-block;}.ssrcss-1bujrf4-NavigationLink-SearchLink:hover .eki2hvo16::after,.ssrcss-1bujrf4-NavigationLink-SearchLink:focus .eki2hvo16::after,.ssrcss-1bujrf4-NavigationLink-SearchLink[data-open='true'] .eki2hvo16::after{width:100%;opacity:1;}@media (min-width: 23.4375rem){.ssrcss-1bujrf4-NavigationLink-SearchLink{text-align:center;min-width:2.5rem;}}.ssrcss-1bujrf4-NavigationLink-SearchLink::after{content:'';display:block;background-color:#000000;position:absolute;right:0;left:0;bottom:0.375rem;height:0.125rem;width:66%;opacity:0;}@media (forced-colors: active){.ssrcss-1bujrf4-NavigationLink-SearchLink:hover,.ssrcss-1bujrf4-NavigationLink-SearchLink:focus,.ssrcss-1bujrf4-NavigationLink-SearchLink[data-open='true']{margin-bottom:-1px;border-bottom:1px solid currentcolor!important;}}.ssrcss-1bujrf4-NavigationLink-SearchLink:hover::after,.ssrcss-1bujrf4-NavigationLink-SearchLink:focus::after,.ssrcss-1bujrf4-NavigationLink-SearchLink[data-open='true']::after{width:100%;opacity:1;}@media (prefers-reduced-motion: no-preference){.ssrcss-1bujrf4-NavigationLink-SearchLink::after{-webkit-transition:width 0.2s,opacity 0.2s;transition:width 0.2s,opacity 0.2s;transition-timing-function:cubic-bezier(0.75, 0, 0.15, 1);}}@media (min-width: 18.75rem){.ssrcss-1bujrf4-NavigationLink-SearchLink{min-width:2.75rem;}}@media (min-width: 23.4375rem){.ssrcss-1bujrf4-NavigationLink-SearchLink{min-width:3rem;width:3rem;text-align:center;}}@media (min-width: 80rem){.ssrcss-1bujrf4-NavigationLink-SearchLink{background:#E6E8EA;display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-align-items:center;-webkit-box-align:center;-ms-flex-align:center;align-items:center;height:1rem;padding:0.75rem 0.625rem;margin-left:0.5rem;min-width:11.25rem;}.ssrcss-1bujrf4-NavigationLink-SearchLink::after{display:none;}}.ssrcss-mwl823-IconWrapper-SearchIconWrapper{display:inline-block;width:1.625rem;height:1.625rem;vertical-align:middle;color:#000000;width:1.75rem;height:1.8125rem;}@media (min-width: 80rem){.ssrcss-mwl823-IconWrapper-SearchIconWrapper{width:1.375rem;height:1.375rem;}}@media (min-width: 80rem){.ssrcss-mwl823-IconWrapper-SearchIconWrapper{width:1rem;height:1rem;vertical-align:-0.25rem;}}.ssrcss-pz7t8-SearchText{padding-left:0.5rem;color:#000000;position:absolute;overflow:hidden;margin:0;width:1px;height:1px;-webkit-clip-path:inset(100%);clip-path:inset(100%);clip:rect(1px, 1px, 1px, 1px);white-space:nowrap;}@media ( min-width: 80rem){.ssrcss-pz7t8-SearchText{position:static;overflow:visible;width:auto;height:auto;-webkit-clip-path:none;clip-path:none;clip:auto;white-space:inherit;}}.ssrcss-91jqb8-GlobalNavigationDrawer{overflow:hidden;visibility:hidden;}@media (prefers-reduced-motion: no-preference){.ssrcss-91jqb8-GlobalNavigationDrawer>*{transition-property:max-height,height;transition-timing-function:cubic-bezier(0.75, 0, 0.15, 1);transition-delay:0s,0s,0.4s;transition-duration:0.4s,0.4s,0s;transition-property:max-height,height,display;}@media (min-width: 37.5rem){.ssrcss-91jqb8-GlobalNavigationDrawer>*{transition-duration:0.2s,0.2s,0s;}}}.ssrcss-91jqb8-GlobalNavigationDrawer:focus{outline:5px auto -webkit-focus-ring-color;}.ssrcss-2hb8z7-GlobalNavigationMoreMenu{height:0;}.ssrcss-2hb8z7-GlobalNavigationMoreMenu:target{visibility:visible;display:block;height:auto;}@media (min-width: 18.75rem){.ssrcss-2hb8z7-GlobalNavigationMoreMenu:target{height:28rem;}}@media (min-width: 37.5rem){.ssrcss-2hb8z7-GlobalNavigationMoreMenu:target{height:4.0625rem;}}@media (min-width: 37.5rem){.ssrcss-2hb8z7-GlobalNavigationMoreMenu:target{height:8.125rem;}}@media (min-width: 41.25rem){.ssrcss-2hb8z7-GlobalNavigationMoreMenu:target{height:4.0625rem;}}.ssrcss-1obp207-MenuWrapper{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-box-pack:justify;-webkit-justify-content:space-between;justify-content:space-between;}.ssrcss-1pnyklo-MenuLinkList-En{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-flex:auto;-ms-flex:auto;flex:auto;-webkit-align-items:center;-webkit-box-align:center;-ms-flex-align:center;align-items:center;-webkit-box-flex-wrap:wrap;-webkit-flex-wrap:wrap;-ms-flex-wrap:wrap;flex-wrap:wrap;}.ssrcss-1pnyklo-MenuLinkList-En:focus{outline:none;}.ssrcss-1pnyklo-MenuLinkList-En>li{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-align-items:center;-webkit-box-align:center;-ms-flex-align:center;align-items:center;-webkit-flex-basis:50%;-ms-flex-preferred-size:50%;flex-basis:50%;}@media (min-width: 37.5rem){.ssrcss-1pnyklo-MenuLinkList-En>li{-webkit-flex-basis:auto;-ms-flex-preferred-size:auto;flex-basis:auto;}}@supports (display: grid){.ssrcss-1pnyklo-MenuLinkList-En{display:grid;grid-gap:0 0.5rem;gap:0 0.5rem;}@media (min-width: 18.75rem){.ssrcss-1pnyklo-MenuLinkList-En{grid-template-columns:repeat(2, minmax(7.5rem, 1fr));}}@media (min-width: 37.5rem){.ssrcss-1pnyklo-MenuLinkList-En{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-box-flex-wrap:wrap;-webkit-flex-wrap:wrap;-ms-flex-wrap:wrap;flex-wrap:wrap;}}.ssrcss-1pnyklo-MenuLinkList-En>li{min-width:initial;}}@media (min-width: 37.5rem){.ssrcss-1pnyklo-MenuLinkList-En >li:nth-of-type(1),.ssrcss-1pnyklo-MenuLinkList-En li:nth-of-type(2),.ssrcss-1pnyklo-MenuLinkList-En li:nth-of-type(3){display:none;}}@media (min-width: 37.5rem){.ssrcss-1pnyklo-MenuLinkList-En >li{padding-right:1.25rem;}.ssrcss-1pnyklo-MenuLinkList-En >li:nth-of-type(4){display:none;}}@media (min-width: 41.25rem){.ssrcss-1pnyklo-MenuLinkList-En >li:nth-of-type(5){display:none;}}@media (min-width: 45.5rem){.ssrcss-1pnyklo-MenuLinkList-En >li:nth-of-type(6){display:none;}}@media (min-width: 48rem){.ssrcss-1pnyklo-MenuLinkList-En >li:nth-of-type(7){display:none;}}.ssrcss-1smaim7-MenuLinkListItem{height:1.75rem;margin:0.25rem 0;-webkit-align-items:stretch;-webkit-box-align:stretch;-ms-flex-align:stretch;align-items:stretch;}@media (min-width: 18.75rem){.ssrcss-1smaim7-MenuLinkListItem{height:3.5rem;}}.ssrcss-1smaim7-MenuLinkListItem:focus>*::after,.ssrcss-1smaim7-MenuLinkListItem[data-open='true']{width:100%;opacity:100%;}.ssrcss-pt9t4a-MenuLink{font-size:1rem;line-height:1.375;display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-box-pack:center;-ms-flex-pack:center;-webkit-justify-content:center;justify-content:center;-webkit-align-items:center;-webkit-box-align:center;-ms-flex-align:center;align-items:center;margin:0.125rem;-webkit-text-decoration:inherit;text-decoration:inherit;color:#000000;white-space:nowrap;position:relative;height:100%;}.ssrcss-pt9t4a-MenuLink::after{content:'';display:block;background-color:#141414;position:absolute;right:0;left:0;bottom:0.125rem;height:0.125rem;width:0;opacity:0;}@media (min-width: 18.75rem){.ssrcss-pt9t4a-MenuLink::after{bottom:0.5rem;}}.ssrcss-pt9t4a-MenuLink:hover::after,.ssrcss-pt9t4a-MenuLink:focus::after,.ssrcss-pt9t4a-MenuLink[data-open='true']::after{width:100%;opacity:1;}@media (min-width: 37.5rem){.ssrcss-pt9t4a-MenuLink{font-size:0.8125rem;line-height:1.2307692307692308;}}@media (min-width: 56.25rem){.ssrcss-pt9t4a-MenuLink{margin:0.375rem;}}@media (prefers-reduced-motion: no-preference){.ssrcss-pt9t4a-MenuLink::after{-webkit-transition:width 0.2s,opacity 0.2s;transition:width 0.2s,opacity 0.2s;transition-timing-function:cubic-bezier(0.75, 0, 0.15, 1);}}.ssrcss-10zs8ef-MenuLink{font-size:1rem;line-height:1.375;display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-box-pack:center;-ms-flex-pack:center;-webkit-justify-content:center;justify-content:center;-webkit-align-items:center;-webkit-box-align:center;-ms-flex-align:center;align-items:center;margin:0.125rem;-webkit-text-decoration:inherit;text-decoration:inherit;color:#000000;white-space:nowrap;position:relative;height:100%;}.ssrcss-10zs8ef-MenuLink::after{content:'';display:block;background-color:#EB1212;position:absolute;right:0;left:0;bottom:0.125rem;height:0.125rem;width:0;opacity:0;}@media (min-width: 18.75rem){.ssrcss-10zs8ef-MenuLink::after{bottom:0.5rem;}}.ssrcss-10zs8ef-MenuLink:hover::after,.ssrcss-10zs8ef-MenuLink:focus::after,.ssrcss-10zs8ef-MenuLink[data-open='true']::after{width:100%;opacity:1;}@media (min-width: 37.5rem){.ssrcss-10zs8ef-MenuLink{font-size:0.8125rem;line-height:1.2307692307692308;}}@media (min-width: 56.25rem){.ssrcss-10zs8ef-MenuLink{margin:0.375rem;}}@media (prefers-reduced-motion: no-preference){.ssrcss-10zs8ef-MenuLink::after{-webkit-transition:width 0.2s,opacity 0.2s;transition:width 0.2s,opacity 0.2s;transition-timing-function:cubic-bezier(0.75, 0, 0.15, 1);}}.ssrcss-1l2ctwi-MenuLink{font-size:1rem;line-height:1.375;display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-box-pack:center;-ms-flex-pack:center;-webkit-justify-content:center;justify-content:center;-webkit-align-items:center;-webkit-box-align:center;-ms-flex-align:center;align-items:center;margin:0.125rem;-webkit-text-decoration:inherit;text-decoration:inherit;color:#000000;white-space:nowrap;position:relative;height:100%;}.ssrcss-1l2ctwi-MenuLink::after{content:'';display:block;background-color:#FFD230;position:absolute;right:0;left:0;bottom:0.125rem;height:0.125rem;width:0;opacity:0;}@media (min-width: 18.75rem){.ssrcss-1l2ctwi-MenuLink::after{bottom:0.5rem;}}.ssrcss-1l2ctwi-MenuLink:hover::after,.ssrcss-1l2ctwi-MenuLink:focus::after,.ssrcss-1l2ctwi-MenuLink[data-open='true']::after{width:100%;opacity:1;}@media (min-width: 37.5rem){.ssrcss-1l2ctwi-MenuLink{font-size:0.8125rem;line-height:1.2307692307692308;}}@media (min-width: 56.25rem){.ssrcss-1l2ctwi-MenuLink{margin:0.375rem;}}@media (prefers-reduced-motion: no-preference){.ssrcss-1l2ctwi-MenuLink::after{-webkit-transition:width 0.2s,opacity 0.2s;transition:width 0.2s,opacity 0.2s;transition-timing-function:cubic-bezier(0.75, 0, 0.15, 1);}}.ssrcss-1pho4im-MenuLink{font-size:1rem;line-height:1.375;display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-box-pack:center;-ms-flex-pack:center;-webkit-justify-content:center;justify-content:center;-webkit-align-items:center;-webkit-box-align:center;-ms-flex-align:center;align-items:center;margin:0.125rem;-webkit-text-decoration:inherit;text-decoration:inherit;color:#000000;white-space:nowrap;position:relative;height:100%;}.ssrcss-1pho4im-MenuLink::after{content:'';display:block;background-color:#AAFF00;position:absolute;right:0;left:0;bottom:0.125rem;height:0.125rem;width:0;opacity:0;}@media (min-width: 18.75rem){.ssrcss-1pho4im-MenuLink::after{bottom:0.5rem;}}.ssrcss-1pho4im-MenuLink:hover::after,.ssrcss-1pho4im-MenuLink:focus::after,.ssrcss-1pho4im-MenuLink[data-open='true']::after{width:100%;opacity:1;}@media (min-width: 37.5rem){.ssrcss-1pho4im-MenuLink{font-size:0.8125rem;line-height:1.2307692307692308;}}@media (min-width: 56.25rem){.ssrcss-1pho4im-MenuLink{margin:0.375rem;}}@media (prefers-reduced-motion: no-preference){.ssrcss-1pho4im-MenuLink::after{-webkit-transition:width 0.2s,opacity 0.2s;transition:width 0.2s,opacity 0.2s;transition-timing-function:cubic-bezier(0.75, 0, 0.15, 1);}}.ssrcss-1v9lxe0-MenuLink{font-size:1rem;line-height:1.375;display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-box-pack:center;-ms-flex-pack:center;-webkit-justify-content:center;justify-content:center;-webkit-align-items:center;-webkit-box-align:center;-ms-flex-align:center;align-items:center;margin:0.125rem;-webkit-text-decoration:inherit;text-decoration:inherit;color:#000000;white-space:nowrap;position:relative;height:100%;}.ssrcss-1v9lxe0-MenuLink::after{content:'';display:block;background-color:#0068FF;position:absolute;right:0;left:0;bottom:0.125rem;height:0.125rem;width:0;opacity:0;}@media (min-width: 18.75rem){.ssrcss-1v9lxe0-MenuLink::after{bottom:0.5rem;}}.ssrcss-1v9lxe0-MenuLink:hover::after,.ssrcss-1v9lxe0-MenuLink:focus::after,.ssrcss-1v9lxe0-MenuLink[data-open='true']::after{width:100%;opacity:1;}@media (min-width: 37.5rem){.ssrcss-1v9lxe0-MenuLink{font-size:0.8125rem;line-height:1.2307692307692308;}}@media (min-width: 56.25rem){.ssrcss-1v9lxe0-MenuLink{margin:0.375rem;}}@media (prefers-reduced-motion: no-preference){.ssrcss-1v9lxe0-MenuLink::after{-webkit-transition:width 0.2s,opacity 0.2s;transition:width 0.2s,opacity 0.2s;transition-timing-function:cubic-bezier(0.75, 0, 0.15, 1);}}.ssrcss-1u9nz9a-MenuLink{font-size:1rem;line-height:1.375;display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-box-pack:center;-ms-flex-pack:center;-webkit-justify-content:center;justify-content:center;-webkit-align-items:center;-webkit-box-align:center;-ms-flex-align:center;align-items:center;margin:0.125rem;-webkit-text-decoration:inherit;text-decoration:inherit;color:#000000;white-space:nowrap;position:relative;height:100%;}.ssrcss-1u9nz9a-MenuLink::after{content:'';display:block;background-color:#0052A1;position:absolute;right:0;left:0;bottom:0.125rem;height:0.125rem;width:0;opacity:0;}@media (min-width: 18.75rem){.ssrcss-1u9nz9a-MenuLink::after{bottom:0.5rem;}}.ssrcss-1u9nz9a-MenuLink:hover::after,.ssrcss-1u9nz9a-MenuLink:focus::after,.ssrcss-1u9nz9a-MenuLink[data-open='true']::after{width:100%;opacity:1;}@media (min-width: 37.5rem){.ssrcss-1u9nz9a-MenuLink{font-size:0.8125rem;line-height:1.2307692307692308;}}@media (min-width: 56.25rem){.ssrcss-1u9nz9a-MenuLink{margin:0.375rem;}}@media (prefers-reduced-motion: no-preference){.ssrcss-1u9nz9a-MenuLink::after{-webkit-transition:width 0.2s,opacity 0.2s;transition:width 0.2s,opacity 0.2s;transition-timing-function:cubic-bezier(0.75, 0, 0.15, 1);}}.ssrcss-11p9y6l-MenuLink{font-size:1rem;line-height:1.375;display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-box-pack:center;-ms-flex-pack:center;-webkit-justify-content:center;justify-content:center;-webkit-align-items:center;-webkit-box-align:center;-ms-flex-align:center;align-items:center;margin:0.125rem;-webkit-text-decoration:inherit;text-decoration:inherit;color:#000000;white-space:nowrap;position:relative;height:100%;}.ssrcss-11p9y6l-MenuLink::after{content:'';display:block;background-color:#589E50;position:absolute;right:0;left:0;bottom:0.125rem;height:0.125rem;width:0;opacity:0;}@media (min-width: 18.75rem){.ssrcss-11p9y6l-MenuLink::after{bottom:0.5rem;}}.ssrcss-11p9y6l-MenuLink:hover::after,.ssrcss-11p9y6l-MenuLink:focus::after,.ssrcss-11p9y6l-MenuLink[data-open='true']::after{width:100%;opacity:1;}@media (min-width: 37.5rem){.ssrcss-11p9y6l-MenuLink{font-size:0.8125rem;line-height:1.2307692307692308;}}@media (min-width: 56.25rem){.ssrcss-11p9y6l-MenuLink{margin:0.375rem;}}@media (prefers-reduced-motion: no-preference){.ssrcss-11p9y6l-MenuLink::after{-webkit-transition:width 0.2s,opacity 0.2s;transition:width 0.2s,opacity 0.2s;transition-timing-function:cubic-bezier(0.75, 0, 0.15, 1);}}.ssrcss-116dfr6-MenuLink{font-size:1rem;line-height:1.375;display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-box-pack:center;-ms-flex-pack:center;-webkit-justify-content:center;justify-content:center;-webkit-align-items:center;-webkit-box-align:center;-ms-flex-align:center;align-items:center;margin:0.125rem;-webkit-text-decoration:inherit;text-decoration:inherit;color:#000000;white-space:nowrap;position:relative;height:100%;}.ssrcss-116dfr6-MenuLink::after{content:'';display:block;background-color:#482878;position:absolute;right:0;left:0;bottom:0.125rem;height:0.125rem;width:0;opacity:0;}@media (min-width: 18.75rem){.ssrcss-116dfr6-MenuLink::after{bottom:0.5rem;}}.ssrcss-116dfr6-MenuLink:hover::after,.ssrcss-116dfr6-MenuLink:focus::after,.ssrcss-116dfr6-MenuLink[data-open='true']::after{width:100%;opacity:1;}@media (min-width: 37.5rem){.ssrcss-116dfr6-MenuLink{font-size:0.8125rem;line-height:1.2307692307692308;}}@media (min-width: 56.25rem){.ssrcss-116dfr6-MenuLink{margin:0.375rem;}}@media (prefers-reduced-motion: no-preference){.ssrcss-116dfr6-MenuLink::after{-webkit-transition:width 0.2s,opacity 0.2s;transition:width 0.2s,opacity 0.2s;transition-timing-function:cubic-bezier(0.75, 0, 0.15, 1);}}.ssrcss-l19037-MenuLink{font-size:1rem;line-height:1.375;display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-box-pack:center;-ms-flex-pack:center;-webkit-justify-content:center;justify-content:center;-webkit-align-items:center;-webkit-box-align:center;-ms-flex-align:center;align-items:center;margin:0.125rem;-webkit-text-decoration:inherit;text-decoration:inherit;color:#000000;white-space:nowrap;position:relative;height:100%;}.ssrcss-l19037-MenuLink::after{content:'';display:block;background-color:#002856;position:absolute;right:0;left:0;bottom:0.125rem;height:0.125rem;width:0;opacity:0;}@media (min-width: 18.75rem){.ssrcss-l19037-MenuLink::after{bottom:0.5rem;}}.ssrcss-l19037-MenuLink:hover::after,.ssrcss-l19037-MenuLink:focus::after,.ssrcss-l19037-MenuLink[data-open='true']::after{width:100%;opacity:1;}@media (min-width: 37.5rem){.ssrcss-l19037-MenuLink{font-size:0.8125rem;line-height:1.2307692307692308;}}@media (min-width: 56.25rem){.ssrcss-l19037-MenuLink{margin:0.375rem;}}@media (prefers-reduced-motion: no-preference){.ssrcss-l19037-MenuLink::after{-webkit-transition:width 0.2s,opacity 0.2s;transition:width 0.2s,opacity 0.2s;transition-timing-function:cubic-bezier(0.75, 0, 0.15, 1);}}.ssrcss-7nqmpo-MenuLink{font-size:1rem;line-height:1.375;display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-box-pack:center;-ms-flex-pack:center;-webkit-justify-content:center;justify-content:center;-webkit-align-items:center;-webkit-box-align:center;-ms-flex-align:center;align-items:center;margin:0.125rem;-webkit-text-decoration:inherit;text-decoration:inherit;color:#000000;white-space:nowrap;position:relative;height:100%;}.ssrcss-7nqmpo-MenuLink::after{content:'';display:block;background-color:#149EDC;position:absolute;right:0;left:0;bottom:0.125rem;height:0.125rem;width:0;opacity:0;}@media (min-width: 18.75rem){.ssrcss-7nqmpo-MenuLink::after{bottom:0.5rem;}}.ssrcss-7nqmpo-MenuLink:hover::after,.ssrcss-7nqmpo-MenuLink:focus::after,.ssrcss-7nqmpo-MenuLink[data-open='true']::after{width:100%;opacity:1;}@media (min-width: 37.5rem){.ssrcss-7nqmpo-MenuLink{font-size:0.8125rem;line-height:1.2307692307692308;}}@media (min-width: 56.25rem){.ssrcss-7nqmpo-MenuLink{margin:0.375rem;}}@media (prefers-reduced-motion: no-preference){.ssrcss-7nqmpo-MenuLink::after{-webkit-transition:width 0.2s,opacity 0.2s;transition:width 0.2s,opacity 0.2s;transition-timing-function:cubic-bezier(0.75, 0, 0.15, 1);}}.ssrcss-ykhqnw-MenuLink{font-size:1rem;line-height:1.375;display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-box-pack:center;-ms-flex-pack:center;-webkit-justify-content:center;justify-content:center;-webkit-align-items:center;-webkit-box-align:center;-ms-flex-align:center;align-items:center;margin:0.125rem;-webkit-text-decoration:inherit;text-decoration:inherit;color:#000000;white-space:nowrap;position:relative;height:100%;}.ssrcss-ykhqnw-MenuLink::after{content:'';display:block;background-color:#FA6400;position:absolute;right:0;left:0;bottom:0.125rem;height:0.125rem;width:0;opacity:0;}@media (min-width: 18.75rem){.ssrcss-ykhqnw-MenuLink::after{bottom:0.5rem;}}.ssrcss-ykhqnw-MenuLink:hover::after,.ssrcss-ykhqnw-MenuLink:focus::after,.ssrcss-ykhqnw-MenuLink[data-open='true']::after{width:100%;opacity:1;}@media (min-width: 37.5rem){.ssrcss-ykhqnw-MenuLink{font-size:0.8125rem;line-height:1.2307692307692308;}}@media (min-width: 56.25rem){.ssrcss-ykhqnw-MenuLink{margin:0.375rem;}}@media (prefers-reduced-motion: no-preference){.ssrcss-ykhqnw-MenuLink::after{-webkit-transition:width 0.2s,opacity 0.2s;transition:width 0.2s,opacity 0.2s;transition-timing-function:cubic-bezier(0.75, 0, 0.15, 1);}}.ssrcss-1ejv6c9-CloseButtonWrapper{margin-top:0.25rem;}.ssrcss-1cxgy00-CallToActionLink{font-family:ReithSans,Helvetica,Arial,freesans,sans-serif;font-weight:700;font-feature-settings:'ss01' 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(text-underline-offset: 0.25em){.ssrcss-1cxgy00-CallToActionLink .esxl4sy2{border-bottom:none;-webkit-text-decoration:underline transparent;text-decoration:underline transparent;text-decoration-thickness:2px;text-decoration-skip-ink:none;text-underline-offset:0.3125em;-webkit-transition:text-decoration 0.2s;transition:text-decoration 0.2s;}}.ssrcss-1cxgy00-CallToActionLink:hover,.ssrcss-1cxgy00-CallToActionLink:focus,.ssrcss-1cxgy00-CallToActionLink:active{cursor:pointer;background:#0051AD;color:#FFFFFF;box-shadow:0 0 0 0.125rem #0051AD;}.ssrcss-1cxgy00-CallToActionLink:hover .esxl4sy2,.ssrcss-1cxgy00-CallToActionLink:focus .esxl4sy2,.ssrcss-1cxgy00-CallToActionLink:active .esxl4sy2{border-bottom:2px solid currentcolor;}@supports (text-underline-offset: 0.25em){.ssrcss-1cxgy00-CallToActionLink:hover .esxl4sy2,.ssrcss-1cxgy00-CallToActionLink:focus .esxl4sy2,.ssrcss-1cxgy00-CallToActionLink:active .esxl4sy2{border-bottom:none;-webkit-text-decoration:underline currentcolor;text-decoration:underline currentcolor;text-decoration-thickness:2px;text-decoration-skip-ink:none;text-underline-offset:0.3125em;}}.ssrcss-1cxgy00-CallToActionLink:focus{box-shadow:0 0 0 0.125rem #FFFFFF;outline:0.125rem solid #000000;outline-offset:0.125rem;box-shadow:0 0 0 0.125rem #0051AD,0 0 0 calc(0.125rem + 0.125rem) #FFFFFF;outline-offset:calc(0.125rem + 0.125rem);}.ssrcss-1hfawy1-IconWrapper{display:inline-block;width:1.125rem;height:1.125rem;min-width:1.25rem;vertical-align:middle;}.ssrcss-12njlvq-ProductNavigationContainer{font-family:ReithSans,Helvetica,Arial,freesans,sans-serif;font-weight:400;font-feature-settings:'ss01' off;font-size:1rem;line-height:1.375;background-color:#B80000;color:#FFFFFF;position:relative;}.ssrcss-1fa1ju1-Masthead{font-size:1rem;line-height:1.375;font-family:ReithSans,Helvetica,Arial,freesans,sans-serif;font-weight:700;font-feature-settings:'ss01' off;background:#B80000;color:#FFFFFF;}.ssrcss-12x0ma7-ContentWrapper{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-align-items:center;-webkit-box-align:center;-ms-flex-align:center;align-items:center;-webkit-box-pack:justify;-webkit-justify-content:space-between;justify-content:space-between;}.ssrcss-kpltdl-LogoWrapper{margin:0.25rem 0;}.ssrcss-1vyfvn-LogoLink{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-align-items:center;-webkit-box-align:center;-ms-flex-align:center;align-items:center;width:auto;-webkit-text-decoration:none;text-decoration:none;color:inherit;}@media all and (-ms-high-contrast: none),(-ms-high-contrast: active){.ssrcss-1vyfvn-LogoLink{width:100%;}}.ssrcss-19cmzaj-LogoIcon{display:block;padding:calc(0.75rem - 0.25rem) 0;height:1.625rem;fill:currentcolor;max-width:10rem;}@media (min-width: 25rem){.ssrcss-19cmzaj-LogoIcon{padding:calc(0.875rem - 0.25rem) 0;height:1.75rem;max-width:15.5rem;}}@media (min-width: 37.5rem){.ssrcss-19cmzaj-LogoIcon{padding:calc(1rem - 0.25rem) 0;max-width:initial;}}@media (min-width: 37.5rem){.ssrcss-as2ggt-Navigation{border-top:0.0625rem solid #DB7F7F;}}html.no-js .ssrcss-wlpshj-MainNavBarContainer{border-bottom:0.25rem solid #B80000;}.ssrcss-325dy3-MenuContainer-PrimaryNavBarContainer{background-color:#FFFFFF;color:#141414;}@media (min-width: 37.5rem){.ssrcss-325dy3-MenuContainer-PrimaryNavBarContainer{background-color:#B80000;color:#FFFFFF;}}.ssrcss-tr5xws-PrimaryListContainer{margin:0 -0.5rem;}@media (min-width: 25rem){.ssrcss-tr5xws-PrimaryListContainer{margin:0 -1rem;}}@media (min-width: 37.5rem){.ssrcss-tr5xws-PrimaryListContainer{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-box-pack:justify;-webkit-justify-content:space-between;justify-content:space-between;margin:0;}.ssrcss-tr5xws-PrimaryListContainer .e14xdrat1 .eis6szr3:not(:last-of-type) .eis6szr2 .eis6szr1{border-right-style:solid;border-right-width:0.0625rem;border-right-color:#DB7F7F;}}.ssrcss-1fph62a-ToggleContainer{position:absolute;right:0.5rem;top:0.25rem;background-color:transparent;}@media (min-width: 25rem){.ssrcss-1fph62a-ToggleContainer{top:0.5rem;}}@media (min-width: 37.5rem){.ssrcss-1fph62a-ToggleContainer{display:none;}}.ssrcss-1fph62a-ToggleContainer .ekfn8591{border:0.0625rem solid;border-color:#DB7F7F;}.ssrcss-1fph62a-ToggleContainer .ekfn8591:hover,.ssrcss-1fph62a-ToggleContainer .ekfn8591:focus,.ssrcss-1fph62a-ToggleContainer .ekfn8591:active{color:#141414;background-color:#FFFFFF;border-color:transparent;}.ssrcss-pnxjgb-StyledToggle{font-family:ReithSans,Helvetica,Arial,freesans,sans-serif;font-weight:400;font-feature-settings:'ss01' off;font-size:1rem;line-height:1.375;-webkit-text-decoration:none;text-decoration:none;box-sizing:border-box;display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-align-items:center;-webkit-box-align:center;-ms-flex-align:center;align-items:center;position:relative;padding:0.5rem;cursor:pointer;color:#FFFFFF;background-color:#B80000;border:none;}html.no-js .ssrcss-pnxjgb-StyledToggle{background-color:#FFFFFF;color:#141414;}@media (min-width: 37.5rem){.ssrcss-pnxjgb-StyledToggle{min-height:2.375rem;}@media (pointer: coarse){.ssrcss-pnxjgb-StyledToggle{min-height:2.75rem;}}}.ssrcss-1m4972l-IconWrapper{display:inline-block;width:1rem;height:1rem;margin-right:0.5rem;}.ssrcss-141d9xq-MenuListContainer{display:none;}html.no-js .ssrcss-141d9xq-MenuListContainer{display:block;}@media (min-width: 37.5rem){.ssrcss-141d9xq-MenuListContainer{margin-left:-0.5rem;margin-right:-0.5rem;padding:0.5rem 0;}}@media (min-width: 37.5rem){.ssrcss-141d9xq-MenuListContainer{background-color:transparent;display:block;padding:0;margin:0;-webkit-flex-basis:100%;-ms-flex-preferred-size:100%;flex-basis:100%;}@media (pointer: coarse){.ssrcss-141d9xq-MenuListContainer{overflow-x:scroll;-webkit-overflow-scrolling:touch;-ms-overflow-style:-ms-autohiding-scrollbar;-ms-overflow-style:none;scrollbar-width:none;}.ssrcss-141d9xq-MenuListContainer::-webkit-scrollbar{display:none;}}}.ssrcss-yhbmpm-StyledMenuList{font-family:ReithSans,Helvetica,Arial,freesans,sans-serif;font-weight:400;font-feature-settings:'ss01' off;}@media (min-width: 37.5rem){.ssrcss-yhbmpm-StyledMenuList{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-box-flex-wrap:wrap;-webkit-flex-wrap:wrap;-ms-flex-wrap:wrap;flex-wrap:wrap;position:relative;left:-0.5rem;}@media (pointer: 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id="main-heading" type="headline" tabindex="-1" class="ssrcss-1s9pby4-Heading e10rt3ze0">Oceans' deepest depth re-measured</h1><div><ul role="list" class="ssrcss-1ik71mx-MetadataStripContainer eh44mf03"><div class="ssrcss-13nu8ri-GroupChildrenForWrapping eh44mf02"><li role="listitem" class="ssrcss-30fcoe-MetadataStripItem eh44mf01"><div class="visually-hidden ssrcss-1f39n02-VisuallyHidden e16en2lz0">Published</div><div class="ssrcss-m5j4pi-MetadataContent eh44mf00"><span class="ssrcss-1pvwv4b-MetadataSnippet e4wm5bw3"><span class="ssrcss-1if1g9v-MetadataText e4wm5bw1"><time data-testid="timestamp" dateTime="2011-12-07T09:49:39.000Z"><span data-testid="time-and-date:clock" class="ssrcss-1mh4yp1-IconContainer e4wm5bw0"><svg viewBox="0 0 32 32" width="1em" height="1em" class="ssrcss-xi5oyi-StyledIcon e161cein1" focusable="false" aria-hidden="true"><path d="M16 31c8.5 0 15-6.5 15-15S24.5 1 16 1 1 7.5 1 16s6.5 15 15 15m0-2.7C9 28.3 3.7 23 3.7 16S9 3.7 16 3.7 28.3 9 28.3 16 23 28.3 16 28.3m6.2-6.7 1-1.5-5.7-4.5-.6-8.6H15l-.7 10.5z"></path></svg></span>7 December 2011</time></span></span></div></li></div></ul></div><div class="ssrcss-oak0za"><div data-testid="information-panel" class="ssrcss-5tewi8-StyledInformationPanel eu74mg86"><div><div data-testid="information-panel-button"><button width="content-length" type="button" aria-haspopup="true" aria-expanded="false" class="ssrcss-44a2yh-Button eoocusk1"><span data-testid="actions:share" class="ssrcss-1a1fy59-IconWrapper eoocusk0"><svg viewBox="0 0 32 32" width="1em" height="1em" class="ssrcss-xi5oyi-StyledIcon e161cein1" focusable="false" aria-hidden="true"><path d="M7.8 17 25.3 7l-1.2-2.3L6.6 15zm-1.2 0 17.5 10.3 1.2-2.3L7.8 15zm5.6-1c0-2.7-2.2-5-5-5-2.7 0-4.9 2.2-4.9 5 0 2.7 2.2 4.9 4.9 4.9 2.8 0 5-2.2 5-4.9M29.7 5.9c0-2.7-2.2-5-5-5-2.7 0-4.9 2.2-4.9 5 0 2.7 2.2 4.9 4.9 4.9 2.8 0 5-2.2 5-4.9m0 20.2c0-2.7-2.2-5-5-5-2.7 0-4.9 2.2-4.9 5 0 2.7 2.2 4.9 4.9 4.9 2.8.1 5-2.2 5-4.9"></path></svg><span class="visually-hidden 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sharing</a></div></div></div></div></div></header><div data-component="image-block" class="ssrcss-1lw0zz9-ComponentWrapper-FullWidthWrapper ey0461q0"><figure class="ssrcss-1vfya96-StyledFigure e34k3c22"><div class="ssrcss-ab5fd8-StyledFigureContainer e34k3c21"><span class="ssrcss-174rq7w-Placeholder etlorgc0"><picture><source srcSet="https://ichef.bbci.co.uk/ace/standard/240/mcs/media/images/57087000/jpg/_57087494_challenger_deep_trench_624.jpg.webp 240w, https://ichef.bbci.co.uk/ace/standard/320/mcs/media/images/57087000/jpg/_57087494_challenger_deep_trench_624.jpg.webp 320w, https://ichef.bbci.co.uk/ace/standard/480/mcs/media/images/57087000/jpg/_57087494_challenger_deep_trench_624.jpg.webp 480w, https://ichef.bbci.co.uk/ace/standard/624/mcs/media/images/57087000/jpg/_57087494_challenger_deep_trench_624.jpg.webp 624w" type="image/webp"/><img alt="Mariana Trench" loading="eager" src="https://ichef.bbci.co.uk/ace/standard/624/mcs/media/images/57087000/jpg/_57087494_challenger_deep_trench_624.jpg" srcSet="https://ichef.bbci.co.uk/ace/standard/240/mcs/media/images/57087000/jpg/_57087494_challenger_deep_trench_624.jpg 240w, https://ichef.bbci.co.uk/ace/standard/320/mcs/media/images/57087000/jpg/_57087494_challenger_deep_trench_624.jpg 320w, https://ichef.bbci.co.uk/ace/standard/480/mcs/media/images/57087000/jpg/_57087494_challenger_deep_trench_624.jpg 480w, https://ichef.bbci.co.uk/ace/standard/624/mcs/media/images/57087000/jpg/_57087494_challenger_deep_trench_624.jpg 624w" width="624" height="364" class="ssrcss-11yxrdo-Image edrdn950"/></picture></span></div></figure></div><div data-component="byline-block" class="ssrcss-1hbb5i-BylineComponentWrapper e8mq1e90"><div class="ssrcss-qt5zqv-BylineWrapper e8mq1e917"><div class="ssrcss-h3c0s8-ContributorContainer e8mq1e916"><div class="ssrcss-1u2in0b-Container-ContributorDetails e8mq1e913"><div class="ssrcss-68pt20-Text-TextContributorName e8mq1e96">By Jonathan Amos</div><div class="ssrcss-84ltp5-Text e8mq1e910">Science correspondent, BBC News, San Francisco</div></div></div></div><div class="ssrcss-jlwt2c-Divider e8mq1e915"></div></div><div data-component="text-block" class="ssrcss-uf6wea-RichTextComponentWrapper ep2nwvo0"><div class="ssrcss-7uxr49-RichTextContainer e5tfeyi1"><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10"><b class="ssrcss-1xjjfut-BoldText e5tfeyi3">US scientists have mapped the deepest part of the world's oceans in greater detail than ever before.</b></p><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10">The Mariana Trench in the western Pacific runs for about 2,500km and extends down to 10,994m.</p><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10">This measurement for the deepest point - known as Challenger Deep - is arguably the most precise yet.</p><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10">The survey, conducted by the Center for Coastal and Ocean Mapping (CCOM), was completed to help determine the exact extent of US waters in the region.</p><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10">"We mapped the entire trench, from its northern end at Dutton Ridge, all the way to where it becomes the Yap Trench in the south," explained Dr Jim Gardner from CCOM, which is based at the University of New Hampshire.</p><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10">"We used a multibeam echosounder mounted on a US Navy hydrographic ship. This instrument allows you to map a swath of soundings perpendicular to the line of travel of the ship. It's like mowing the grass. And we were able to map the trench at a 100m resolution," he told BBC News.</p><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10">The distance to the bottom of Challenger Deep has an error associated with it of about plus or minus 40m. </p></div></div><div data-component="audio-block" class="ssrcss-xza2yt-ComponentWrapper ep2nwvo1"><figure class="ssrcss-1vfya96-StyledFigure e34k3c22"><div class="ssrcss-ab5fd8-StyledFigureContainer e34k3c21"><div data-chromatic="ignore" class="ssrcss-dtyrnv-MediaPlayerWrapper e1h75hkw4"><div data-testid="media-player-container-landscape" class="ssrcss-aaorng-MediaContainer e1h75hkw3"><div class="ssrcss-199fzb3-MediaInner e1h75hkw2"><div data-testid="bbc-logo-wrapper" class="ssrcss-1twt4cc-LogoIconWrapper e1h75hkw0"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 112 32" class="ssrcss-xi5oyi-StyledIcon e161cein1" focusable="false" aria-hidden="true"><path d="M111.99999,4.44444577e-05 L111.99999,32.0000444 L79.9999905,32.0000444 L79.9999905,4.44444577e-05 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56.3587946,14.4013932 55.412572,14.4013932 L55.412572,14.4013932 L52.6469046,14.4013932 L52.6469046,9.92028073 Z M15.4125601,9.92028073 C17.3541163,9.92028073 18.3252277,10.6338365 18.3252277,12.0600591 C18.3252277,12.7988371 18.0762276,13.373504 17.5786719,13.7846152 C17.0807829,14.1960598 16.3587826,14.4013932 15.4125601,14.4013932 L15.4125601,14.4013932 L12.6468927,14.4013932 L12.6468927,9.92028073 Z"></path></svg></div></div></div><noscript><div class="ssrcss-1mm7qis-ErrorMessage eitf6462"><div class="ssrcss-1b7cqa9-StyledInnerContainer eitf6461"><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10">This video can not be played</p><h2 type="normal" class="ssrcss-ad2rmd-Heading e10rt3ze0">To play this video you need to enable JavaScript in your browser.</h2></div></div></noscript></div></div><figcaption class="ssrcss-11b8pqw-StyledFigureCaption e1xtk7to0"><span class="visually-hidden ssrcss-1f39n02-VisuallyHidden e16en2lz0">Media caption, </span><div spacing="6" class="ssrcss-y7krbn-Stack e1y4nx260"><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10">Jim Gardner: "It's like mowing the grass, just back and forth... for weeks on end."</p></div></figcaption></figure></div><div data-component="text-block" class="ssrcss-uf6wea-RichTextComponentWrapper ep2nwvo0"><div class="ssrcss-7uxr49-RichTextContainer e5tfeyi1"><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10">The figure of 10,994m is slightly less than some other measurements in the modern era, but they are all broadly similar.</p><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10">A location in the trench about 200km to the east of Challenger goes almost as far down. This spot, known as HMRG Deep, has a depth of 10,809m.</p><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10">It is extraordinary to think that both Challenger and HMRG extend deeper below sea level than Mount Everest rises above it.</p><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10">Dr Gardner said his team's survey put a huge effort into getting the "sound speed profile" of the water column correct - this measure of how the echosounding signals curve as they descend is the largest source of error in the measurement.</p></div></div><div data-component="image-block" class="ssrcss-1b5y2ub-ComponentWrapper-FullWidthWrapper ey0461q0"><figure class="ssrcss-1vfya96-StyledFigure e34k3c22"><div class="ssrcss-ab5fd8-StyledFigureContainer e34k3c21"><span class="ssrcss-174rq7w-Placeholder etlorgc0"><span><noscript><picture><source srcSet="https://ichef.bbci.co.uk/ace/standard/240/mcs/media/images/57178000/jpg/_57178865_challenger_deep_624.jpg.webp 240w, https://ichef.bbci.co.uk/ace/standard/320/mcs/media/images/57178000/jpg/_57178865_challenger_deep_624.jpg.webp 320w, https://ichef.bbci.co.uk/ace/standard/480/mcs/media/images/57178000/jpg/_57178865_challenger_deep_624.jpg.webp 480w, https://ichef.bbci.co.uk/ace/standard/624/mcs/media/images/57178000/jpg/_57178865_challenger_deep_624.jpg.webp 624w" type="image/webp"/><img alt="Challenger Deep" loading="lazy" src="https://ichef.bbci.co.uk/ace/standard/624/mcs/media/images/57178000/jpg/_57178865_challenger_deep_624.jpg" srcSet="https://ichef.bbci.co.uk/ace/standard/240/mcs/media/images/57178000/jpg/_57178865_challenger_deep_624.jpg 240w, https://ichef.bbci.co.uk/ace/standard/320/mcs/media/images/57178000/jpg/_57178865_challenger_deep_624.jpg 320w, https://ichef.bbci.co.uk/ace/standard/480/mcs/media/images/57178000/jpg/_57178865_challenger_deep_624.jpg 480w, https://ichef.bbci.co.uk/ace/standard/624/mcs/media/images/57178000/jpg/_57178865_challenger_deep_624.jpg 624w" width="624" height="364" class="ssrcss-11yxrdo-Image edrdn950"/></picture></noscript></span></span></div></figure></div><div data-component="text-block" class="ssrcss-uf6wea-RichTextComponentWrapper ep2nwvo0"><div class="ssrcss-7uxr49-RichTextContainer e5tfeyi1"><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10">He presented the results of the mapping here at <a href="http://sites.agu.org/fallmeeting/" class="ssrcss-f6h2dj-InlineLink e1kn3p7n0">the 2011 American Geophysical Union (AGU) Fall Meeting<span class="visually-hidden ssrcss-1f39n02-VisuallyHidden e16en2lz0">, <!-- -->external</span></a>, the world's largest annual gathering of Earth and planetary scientists.</p><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10">The US State Department funded the study because it wants to know whether the exclusive economic zone encompassing the American territories of Guam and the Northern Mariana Islands can be pushed out beyond its current limit of 200 nautical miles (370km). </p><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10">This may be possible if the shape of the seafloor fulfils certain requirements under the United Nations Convention on the Law of the Sea.</p><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10">But the data also has high scientific interest in that it gives geologists a clearer picture of the structures in one of the most fascinating subduction zones on Earth.</p><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10">It is at the trench where a huge slab of Pacific oceanic crust is diving down under the adjacent Philippines tectonic plate.</p><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10">Researchers are keen to know what happens when underwater mountains, or seamounts, go over the edge and are swallowed. </p><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10">There has been considerable debate over whether the descent of the seamounts can influence the frequency and scale of big earthquakes. It has been suggested they might create extra friction that can then be released suddenly to trigger major tremors.</p><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10">"Our data shows the seamounts entering the Mariana Trench are getting really fractured as they go down," said Dr Gardner.</p><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10">"As soon as the Pacific Plate starts bending down, it cracks that old, old crust. That crust is really brittle. It cracks right through the seamounts. Certainly in the Mariana Trench, the seamounts get splintered and whittled away, and then get subducted. </p><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10">"What I don't see are remnants of seamounts being accreted to the inner wall of the trench."</p><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10">What is evident, however, is the pile of material this creates across the axis of the trench in a number of places. Dr Gardner describes four "bridges" that stand as much as 2,500m above the floor of the depression.</p></div></div><div data-component="subheadline-block" class="ssrcss-19w8cxh-ComponentWrapper-HeadlineComponentWrapper egtrm1f0"><h2 id="Race-to-the-bottom" tabindex="-1" class="ssrcss-pbttu9-Heading e10rt3ze0"><span role="text">'Race to the bottom'</span></h2></div><div data-component="text-block" class="ssrcss-uf6wea-RichTextComponentWrapper ep2nwvo0"><div class="ssrcss-7uxr49-RichTextContainer e5tfeyi1"><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10">The survey is also highly topical in that four teams are about to send manned submersibles into the trench to explore its depths.</p><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10">So far, only two humans have visited Challenger Deep - Don Walsh and Jacques Piccard in the research bathyscaphe Trieste in 1960.</p><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10">But those that are racing to return to the deepest of the deep are Virgin's Oceanic submarine, which will be piloted by Chris Welsh; Triton submarines, which is based in Florida; James Cameron is said to be backing another effort in a bid to film the Mariana Trench; and DOER Marine, which is backed by Google's Eric Schmidt and oceanographer Sylvia Earle.</p></div></div><div data-component="image-block" class="ssrcss-1b5y2ub-ComponentWrapper-FullWidthWrapper ey0461q0"><figure class="ssrcss-1vfya96-StyledFigure e34k3c22"><div class="ssrcss-ab5fd8-StyledFigureContainer e34k3c21"><span class="ssrcss-9kapsl-Placeholder etlorgc0"><span><noscript><picture><source srcSet="https://ichef.bbci.co.uk/ace/standard/240/mcs/media/images/57099000/jpg/_57099229_57099228.jpg.webp 240w" type="image/webp"/><img alt="Virgin's deep sub" loading="lazy" src="https://ichef.bbci.co.uk/ace/standard/304/mcs/media/images/57099000/jpg/_57099229_57099228.jpg" srcSet="https://ichef.bbci.co.uk/ace/standard/240/mcs/media/images/57099000/jpg/_57099229_57099228.jpg 240w" width="304" height="228" class="ssrcss-11yxrdo-Image edrdn950"/></picture></noscript></span></span></div><figcaption class="ssrcss-1kk6ucf-StyledFigureCaption ehbdhz00"><span class="visually-hidden ssrcss-1f39n02-VisuallyHidden e16en2lz0">Image caption, </span><div spacing="6" class="ssrcss-y7krbn-Stack e1y4nx260"><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10">There is renewed interest in the trench and new submersibles will soon dive its depths</p></div></figcaption></figure></div><div data-component="text-block" class="ssrcss-uf6wea-RichTextComponentWrapper ep2nwvo0"><div class="ssrcss-7uxr49-RichTextContainer e5tfeyi1"><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10">These missions will be a huge gamble for those involved, both in terms of finance and reputation, as well as posing a serious safety concern for the pilots.</p><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10">Dr Earle told BBC News: "In 1960, Don Walsh and Jacques Piccard knew only that they were descending in the bathyscaphe Trieste to what was thought to be the deepest place in the sea - the Challenger Deep in the Mariana Trench. </p><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10">"The terrain was unknown, unmapped - truly a dive into a deep mystery. Today, as explorers begin to return to that deepest place, they can do so with a high-resolution map in hand, thanks to technologies that did not exist half a century ago.</p><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10">"In broad strokes, the ocean's great mountain ranges, valleys are now defined in maps derived from satellite observations and sonar swaths from research vessels, but only about 5% of the ocean has been explored and mapped with the detail comparable to Earth's above-ocean terrain, or the surface of the Moon, Mars, or Jupiter. </p><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10">"In 1960, it seemed that nothing humans could do could alter the nature of the ocean - or if we did, it wouldn't matter. Now we know that the ocean is Earth's 'life support system', the blue heart of the planet, the key to climate, weather, planetary chemistry. We also know that the ocean is in trouble owing to what we are putting into it - and what we are taking out.</p><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10">"High-resolution maps of the iconic Mariana Trench may inspire action to fill in the blanks for the rest of Earth's surface - under the sea. At the very least we should have a good map of the part of the Earth that keeps us alive."</p><p class="ssrcss-1q0x1qg-Paragraph e1jhz7w10"><a href="mailto:Jonathan.Amos-INTERNET@bbc.co.uk" class="ssrcss-f6h2dj-InlineLink e1kn3p7n0">Jonathan.Amos-INTERNET@bbc.co.uk<span class="visually-hidden ssrcss-1f39n02-VisuallyHidden e16en2lz0">, <!-- -->external</span></a></p></div></div><div data-component="links-block" class="ssrcss-5i1hhv-LinksComponentWrapper e3eyuya0"><section class="ssrcss-msolhr-LinksWrapper e3eyuya5"><div class="ssrcss-1lqqmgw-LinksHeadingWrapper e3eyuya4"><h2 type="normal" class="ssrcss-ad2rmd-Heading e10rt3ze0">More on this story</h2></div><ul role="list" class="ssrcss-1ypkflt-EndOfContentLinksGrid e3eyuya2"><li class="ssrcss-547yr3-PromoItem e3eyuya1"><div data-testid="promo" class="ssrcss-15ic1ob-Promo e1vyq2e80"><div class="ssrcss-1enzf19-PromoCompact e18gnqux0"><div class="ssrcss-1d68cot-PromoContent exn3ah99"><div spacing="2" class="ssrcss-1f3bvyz-Stack e1y4nx260"><a href="/news/technology-15790088" class="ssrcss-1mrs5ns-PromoLink exn3ah91"><span role="text"><p class="ssrcss-1sen9vx-PromoHeadline exn3ah96"><span aria-hidden="false">Robots set out to sample the seas</span></p></span></a></div><div spacing="2" class="ssrcss-1f3bvyz-Stack e1y4nx260"><div><ul role="list" class="ssrcss-1ik71mx-MetadataStripContainer eh44mf03"><div class="ssrcss-13nu8ri-GroupChildrenForWrapping eh44mf02"><li role="listitem" class="ssrcss-30fcoe-MetadataStripItem eh44mf01"><div class="visually-hidden ssrcss-1f39n02-VisuallyHidden e16en2lz0">Published</div><div class="ssrcss-m5j4pi-MetadataContent eh44mf00"><span class="ssrcss-1pvwv4b-MetadataSnippet e4wm5bw3"><span class="ssrcss-1if1g9v-MetadataText e4wm5bw1">14 March 2012</span></span></div></li></div></ul></div></div></div></div></div></li><li class="ssrcss-547yr3-PromoItem e3eyuya1"><div data-testid="promo" class="ssrcss-15ic1ob-Promo e1vyq2e80"><div class="ssrcss-1enzf19-PromoCompact e18gnqux0"><div class="ssrcss-1d68cot-PromoContent exn3ah99"><div spacing="2" class="ssrcss-1f3bvyz-Stack e1y4nx260"><a href="/news/entertainment-arts-13903891" class="ssrcss-1mrs5ns-PromoLink exn3ah91"><span role="text"><p class="ssrcss-1sen9vx-PromoHeadline exn3ah96"><span aria-hidden="false">Cameron receives explorer honour</span></p></span></a></div><div spacing="2" class="ssrcss-1f3bvyz-Stack e1y4nx260"><div><ul role="list" class="ssrcss-1ik71mx-MetadataStripContainer eh44mf03"><div class="ssrcss-13nu8ri-GroupChildrenForWrapping eh44mf02"><li role="listitem" class="ssrcss-30fcoe-MetadataStripItem eh44mf01"><div class="visually-hidden ssrcss-1f39n02-VisuallyHidden e16en2lz0">Published</div><div class="ssrcss-m5j4pi-MetadataContent eh44mf00"><span class="ssrcss-1pvwv4b-MetadataSnippet e4wm5bw3"><span class="ssrcss-1if1g9v-MetadataText e4wm5bw1">24 June 2011</span></span></div></li></div></ul></div></div></div></div></div></li><li class="ssrcss-547yr3-PromoItem e3eyuya1"><div data-testid="promo" class="ssrcss-15ic1ob-Promo e1vyq2e80"><div class="ssrcss-1enzf19-PromoCompact e18gnqux0"><div class="ssrcss-1d68cot-PromoContent exn3ah99"><div spacing="2" class="ssrcss-1f3bvyz-Stack e1y4nx260"><a href="/news/av/science-environment-12982079" class="ssrcss-1mrs5ns-PromoLink exn3ah91"><span role="text"><span class="ssrcss-1i5ua56-PageTypeIconContainer exn3ah97"><svg viewBox="0 0 32 32" width="1em" height="1em" class="ssrcss-xi5oyi-StyledIcon e161cein1" focusable="false" aria-hidden="true"><path d="M29 16 5.8 1v30z"></path></svg></span><p class="ssrcss-1sen9vx-PromoHeadline exn3ah96"><span class="visually-hidden ssrcss-1f39n02-VisuallyHidden e16en2lz0">Branson to journey to ocean bottom. 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This instrument allows you to map a swath of soundings perpendicular to the line of travel of the ship. It's like mowing the grass. And we were able to map the trench at a 100m resolution,\\\" he told BBC News.\",\"blocks\":[{\"type\":\"fragment\",\"model\":{\"text\":\"\\\"We used a multibeam echosounder mounted on a US Navy hydrographic ship. This instrument allows you to map a swath of soundings perpendicular to the line of travel of the ship. It's like mowing the grass. And we were able to map the trench at a 100m resolution,\\\" he told BBC News.\",\"attributes\":[]}}]}},{\"type\":\"paragraph\",\"model\":{\"text\":\"The distance to the bottom of Challenger Deep has an error associated with it of about plus or minus 40m. \",\"blocks\":[{\"type\":\"fragment\",\"model\":{\"text\":\"The distance to the bottom of Challenger Deep has an error associated with it of about plus or minus 40m. \",\"attributes\":[]}}]}}]}},{\"type\":\"audio\",\"model\":{\"caption\":{\"type\":\"text\",\"model\":{\"blocks\":[{\"type\":\"paragraph\",\"model\":{\"text\":\"Jim Gardner: \\\"It's like mowing the grass, just back and forth... for weeks on end.\\\"\",\"blocks\":[{\"type\":\"fragment\",\"model\":{\"text\":\"Jim Gardner: \\\"It's like mowing the grass, just back and forth... for weeks on end.\\\"\",\"attributes\":[]}}]}}]}},\"media\":{\"__typename\":\"ElementsMediaPlayer\",\"items\":[{\"id\":\"p00mc43b\",\"title\":\"Mapping the Mariana Trench\",\"duration\":549,\"holdingImageUrl\":\"https://ichef.bbci.co.uk/images/ic/$recipe/p00mcm4s.jpg\",\"kind\":\"radioProgramme\",\"isEmbeddingAllowed\":false,\"isAdvertisingAllowed\":false}]}}},{\"type\":\"text\",\"model\":{\"blocks\":[{\"type\":\"paragraph\",\"model\":{\"text\":\"The figure of 10,994m is slightly less than some other measurements in the modern era, but they are all broadly similar.\",\"blocks\":[{\"type\":\"fragment\",\"model\":{\"text\":\"The figure of 10,994m is slightly less than some other measurements in the modern era, but they are all broadly similar.\",\"attributes\":[]}}]}},{\"type\":\"paragraph\",\"model\":{\"text\":\"A location in the trench about 200km to the east of Challenger goes almost as far down. This spot, known as HMRG Deep, has a depth of 10,809m.\",\"blocks\":[{\"type\":\"fragment\",\"model\":{\"text\":\"A location in the trench about 200km to the east of Challenger goes almost as far down. This spot, known as HMRG Deep, has a depth of 10,809m.\",\"attributes\":[]}}]}},{\"type\":\"paragraph\",\"model\":{\"text\":\"It is extraordinary to think that both Challenger and HMRG extend deeper below sea level than Mount Everest rises above it.\",\"blocks\":[{\"type\":\"fragment\",\"model\":{\"text\":\"It is extraordinary to think that both Challenger and HMRG extend deeper below sea level than Mount Everest rises above it.\",\"attributes\":[]}}]}},{\"type\":\"paragraph\",\"model\":{\"text\":\"Dr Gardner said his team's survey put a huge effort into getting the \\\"sound speed profile\\\" of the water column correct - this measure of how the echosounding signals curve as they descend is the largest source of error in the measurement.\",\"blocks\":[{\"type\":\"fragment\",\"model\":{\"text\":\"Dr Gardner said his team's survey put a huge effort into getting the \\\"sound speed profile\\\" of the water column correct - this measure of how the echosounding signals curve as they 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American Geophysical Union (AGU) Fall Meeting\",\"locator\":\"http://sites.agu.org/fallmeeting/\",\"isExternal\":true,\"blocks\":[{\"type\":\"fragment\",\"model\":{\"text\":\"the 2011 American Geophysical Union (AGU) Fall Meeting\",\"attributes\":[]}}]}},{\"type\":\"fragment\",\"model\":{\"text\":\", the world's largest annual gathering of Earth and planetary scientists.\",\"attributes\":[]}}]}},{\"type\":\"paragraph\",\"model\":{\"text\":\"The US State Department funded the study because it wants to know whether the exclusive economic zone encompassing the American territories of Guam and the Northern Mariana Islands can be pushed out beyond its current limit of 200 nautical miles (370km). \",\"blocks\":[{\"type\":\"fragment\",\"model\":{\"text\":\"The US State Department funded the study because it wants to know whether the exclusive economic zone encompassing the American territories of Guam and the Northern Mariana Islands can be pushed out beyond its current limit of 200 nautical miles (370km). \",\"attributes\":[]}}]}},{\"type\":\"paragraph\",\"model\":{\"text\":\"This may be possible if the shape of the seafloor fulfils certain requirements under the United Nations Convention on the Law of the Sea.\",\"blocks\":[{\"type\":\"fragment\",\"model\":{\"text\":\"This may be possible if the shape of the seafloor fulfils certain requirements under the United Nations Convention on the Law of the Sea.\",\"attributes\":[]}}]}},{\"type\":\"paragraph\",\"model\":{\"text\":\"But the data also has high scientific interest in that it gives geologists a clearer picture of the structures in one of the most fascinating subduction zones on Earth.\",\"blocks\":[{\"type\":\"fragment\",\"model\":{\"text\":\"But the data also has high scientific interest in that it gives geologists a clearer picture of the structures in one of the most fascinating subduction zones on Earth.\",\"attributes\":[]}}]}},{\"type\":\"paragraph\",\"model\":{\"text\":\"It is at the trench where a huge slab of Pacific oceanic crust is diving down under the adjacent Philippines tectonic plate.\",\"blocks\":[{\"type\":\"fragment\",\"model\":{\"text\":\"It is at the trench where a huge slab of Pacific oceanic crust is diving down under the adjacent Philippines tectonic plate.\",\"attributes\":[]}}]}},{\"type\":\"paragraph\",\"model\":{\"text\":\"Researchers are keen to know what happens when underwater mountains, or seamounts, go over the edge and are swallowed. \",\"blocks\":[{\"type\":\"fragment\",\"model\":{\"text\":\"Researchers are keen to know what happens when underwater mountains, or seamounts, go over the edge and are swallowed. \",\"attributes\":[]}}]}},{\"type\":\"paragraph\",\"model\":{\"text\":\"There has been considerable debate over whether the descent of the seamounts can influence the frequency and scale of big earthquakes. It has been suggested they might create extra friction that can then be released suddenly to trigger major tremors.\",\"blocks\":[{\"type\":\"fragment\",\"model\":{\"text\":\"There has been considerable debate over whether the descent of the seamounts can influence the frequency and scale of big earthquakes. It has been suggested they might create extra friction that can then be released suddenly to trigger major tremors.\",\"attributes\":[]}}]}},{\"type\":\"paragraph\",\"model\":{\"text\":\"\\\"Our data shows the seamounts entering the Mariana Trench are getting really fractured as they go down,\\\" said Dr Gardner.\",\"blocks\":[{\"type\":\"fragment\",\"model\":{\"text\":\"\\\"Our data shows the seamounts entering the Mariana Trench are getting really fractured as they go down,\\\" said Dr Gardner.\",\"attributes\":[]}}]}},{\"type\":\"paragraph\",\"model\":{\"text\":\"\\\"As soon as the Pacific Plate starts bending down, it cracks that old, old crust. That crust is really brittle. It cracks right through the seamounts. Certainly in the Mariana Trench, the seamounts get splintered and whittled away, and then get subducted. \",\"blocks\":[{\"type\":\"fragment\",\"model\":{\"text\":\"\\\"As soon as the Pacific Plate starts bending down, it cracks that old, old crust. That crust is really brittle. It cracks right through the seamounts. Certainly in the Mariana Trench, the seamounts get splintered and whittled away, and then get subducted. \",\"attributes\":[]}}]}},{\"type\":\"paragraph\",\"model\":{\"text\":\"\\\"What I don't see are remnants of seamounts being accreted to the inner wall of the trench.\\\"\",\"blocks\":[{\"type\":\"fragment\",\"model\":{\"text\":\"\\\"What I don't see are remnants of seamounts being accreted to the inner wall of the trench.\\\"\",\"attributes\":[]}}]}},{\"type\":\"paragraph\",\"model\":{\"text\":\"What is evident, however, is the pile of material this creates across the axis of the trench in a number of places. Dr Gardner describes four \\\"bridges\\\" that stand as much as 2,500m above the floor of the depression.\",\"blocks\":[{\"type\":\"fragment\",\"model\":{\"text\":\"What is evident, however, is the pile of material this creates across the axis of the trench in a number of places. Dr Gardner describes four \\\"bridges\\\" that stand as much as 2,500m above the floor of the depression.\",\"attributes\":[]}}]}}]}},{\"type\":\"subheadline\",\"model\":{\"blocks\":[{\"type\":\"text\",\"model\":{\"blocks\":[{\"type\":\"paragraph\",\"model\":{\"text\":\"'Race to the bottom'\",\"blocks\":[{\"type\":\"fragment\",\"model\":{\"text\":\"'Race to the bottom'\",\"attributes\":[]}}]}}]}}],\"level\":2,\"fontScale\":\"headlineSmall\",\"id\":\"Race-to-the-bottom\",\"isFocusable\":true}},{\"type\":\"text\",\"model\":{\"blocks\":[{\"type\":\"paragraph\",\"model\":{\"text\":\"The survey is also highly topical in that four teams are about to send manned submersibles into the trench to explore its depths.\",\"blocks\":[{\"type\":\"fragment\",\"model\":{\"text\":\"The survey is also highly topical in that four teams are about to send manned submersibles into the trench to explore its depths.\",\"attributes\":[]}}]}},{\"type\":\"paragraph\",\"model\":{\"text\":\"So far, only two humans have visited Challenger Deep - Don Walsh and Jacques Piccard in the research bathyscaphe Trieste in 1960.\",\"blocks\":[{\"type\":\"fragment\",\"model\":{\"text\":\"So far, only two humans have visited Challenger Deep - Don Walsh and Jacques Piccard in the research bathyscaphe Trieste in 1960.\",\"attributes\":[]}}]}},{\"type\":\"paragraph\",\"model\":{\"text\":\"But those that are racing to return to the deepest of the deep are Virgin's Oceanic submarine, which will be piloted by Chris Welsh; Triton submarines, which is based in Florida; James Cameron is said to be backing another effort in a bid to film the Mariana Trench; and DOER Marine, which is backed by Google's Eric Schmidt and oceanographer Sylvia Earle.\",\"blocks\":[{\"type\":\"fragment\",\"model\":{\"text\":\"But those that are racing to return to the deepest of the deep are Virgin's Oceanic submarine, which will be piloted by Chris Welsh; Triton submarines, which is based in Florida; James Cameron is said to be backing another effort in a bid to film the Mariana Trench; and DOER Marine, which is backed by Google's Eric Schmidt and oceanographer Sylvia Earle.\",\"attributes\":[]}}]}}]}},{\"type\":\"image\",\"model\":{\"caption\":{\"type\":\"text\",\"model\":{\"blocks\":[{\"type\":\"paragraph\",\"model\":{\"text\":\"There is renewed interest in the trench and new submersibles will soon dive its depths\",\"blocks\":[{\"type\":\"fragment\",\"model\":{\"text\":\"There is renewed interest in the trench and new submersibles will soon dive its depths\",\"attributes\":[]}}]}}]}},\"image\":{\"alt\":\"Virgin's deep sub\",\"copyright\":\"\",\"height\":228,\"width\":304,\"src\":\"https://ichef.bbci.co.uk/ace/standard/304/mcs/media/images/57099000/jpg/_57099229_57099228.jpg\",\"srcSet\":\"https://ichef.bbci.co.uk/ace/standard/240/mcs/media/images/57099000/jpg/_57099229_57099228.jpg.webp 240w\",\"mimeType\":\"image/webp\",\"fallbackSrcSets\":[{\"mimeType\":\"image/jpeg\",\"srcSet\":\"https://ichef.bbci.co.uk/ace/standard/240/mcs/media/images/57099000/jpg/_57099229_57099228.jpg 240w\"}]}}},{\"type\":\"text\",\"model\":{\"blocks\":[{\"type\":\"paragraph\",\"model\":{\"text\":\"These missions will be a huge gamble for those involved, both in terms of finance and reputation, as well as posing a serious safety concern for the pilots.\",\"blocks\":[{\"type\":\"fragment\",\"model\":{\"text\":\"These missions will be a huge gamble for those involved, both in terms of finance and reputation, as well as posing a serious safety concern for the pilots.\",\"attributes\":[]}}]}},{\"type\":\"paragraph\",\"model\":{\"text\":\"Dr Earle told BBC News: \\\"In 1960, Don Walsh and Jacques Piccard knew only that they were descending in the bathyscaphe Trieste to what was thought to be the deepest place in the sea - the Challenger Deep in the Mariana Trench. \",\"blocks\":[{\"type\":\"fragment\",\"model\":{\"text\":\"Dr Earle told BBC News: \\\"In 1960, Don Walsh and Jacques Piccard knew only that they were descending in the bathyscaphe Trieste to what was thought to be the deepest place in the sea - the Challenger Deep in the Mariana Trench. \",\"attributes\":[]}}]}},{\"type\":\"paragraph\",\"model\":{\"text\":\"\\\"The terrain was unknown, unmapped - truly a dive into a deep mystery. Today, as explorers begin to return to that deepest place, they can do so with a high-resolution map in hand, thanks to technologies that did not exist half a century ago.\",\"blocks\":[{\"type\":\"fragment\",\"model\":{\"text\":\"\\\"The terrain was unknown, unmapped - truly a dive into a deep mystery. Today, as explorers begin to return to that deepest place, they can do so with a high-resolution map in hand, thanks to technologies that did not exist half a century ago.\",\"attributes\":[]}}]}},{\"type\":\"paragraph\",\"model\":{\"text\":\"\\\"In broad strokes, the ocean's great mountain ranges, valleys are now defined in maps derived from satellite observations and sonar swaths from research vessels, but only about 5% of the ocean has been explored and mapped with the detail comparable to Earth's above-ocean terrain, or the surface of the Moon, Mars, or Jupiter. \",\"blocks\":[{\"type\":\"fragment\",\"model\":{\"text\":\"\\\"In broad strokes, the ocean's great mountain ranges, valleys are now defined in maps derived from satellite observations and sonar swaths from research vessels, but only about 5% of the ocean has been explored and mapped with the detail comparable to Earth's above-ocean terrain, or the surface of the Moon, Mars, or Jupiter. \",\"attributes\":[]}}]}},{\"type\":\"paragraph\",\"model\":{\"text\":\"\\\"In 1960, it seemed that nothing humans could do could alter the nature of the ocean - or if we did, it wouldn't matter. Now we know that the ocean is Earth's 'life support system', the blue heart of the planet, the key to climate, weather, planetary chemistry. We also know that the ocean is in trouble owing to what we are putting into it - and what we are taking out.\",\"blocks\":[{\"type\":\"fragment\",\"model\":{\"text\":\"\\\"In 1960, it seemed that nothing humans could do could alter the nature of the ocean - or if we did, it wouldn't matter. Now we know that the ocean is Earth's 'life support system', the blue heart of the planet, the key to climate, weather, planetary chemistry. We also know that the ocean is in trouble owing to what we are putting into it - and what we are taking out.\",\"attributes\":[]}}]}},{\"type\":\"paragraph\",\"model\":{\"text\":\"\\\"High-resolution maps of the iconic Mariana Trench may inspire action to fill in the blanks for the rest of Earth's surface - under the sea. At the very least we should have a good map of the part of the Earth that keeps us alive.\\\"\",\"blocks\":[{\"type\":\"fragment\",\"model\":{\"text\":\"\\\"High-resolution maps of the iconic Mariana Trench may inspire action to fill in the blanks for the rest of Earth's surface - under the sea. At the very least we should have a good map of the part of the Earth that keeps us alive.\\\"\",\"attributes\":[]}}]}},{\"type\":\"paragraph\",\"model\":{\"text\":\"Jonathan.Amos-INTERNET@bbc.co.uk\",\"blocks\":[{\"type\":\"urlLink\",\"model\":{\"text\":\"Jonathan.Amos-INTERNET@bbc.co.uk\",\"locator\":\"mailto:Jonathan.Amos-INTERNET@bbc.co.uk\",\"isExternal\":true,\"blocks\":[{\"type\":\"fragment\",\"model\":{\"text\":\"Jonathan.Amos-INTERNET@bbc.co.uk\",\"attributes\":[]}}]}}]}}]}},{\"type\":\"links\",\"model\":{\"blocks\":[{\"type\":\"link\",\"model\":{\"headline\":\"Robots set out to sample the seas\",\"metadataStripItems\":[{\"label\":\"Published\",\"text\":\"14 March 2012\"}],\"url\":\"/news/technology-15790088\",\"service\":\"news\"}},{\"type\":\"link\",\"model\":{\"headline\":\"Cameron receives explorer honour\",\"metadataStripItems\":[{\"label\":\"Published\",\"text\":\"24 June 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