AAAS | Science | The Guardian

<!DOCTYPE html><html lang="en"> <head><script type="text/javascript" src="/_static/js/bundle-playback.js?v=HxkREWBo" charset="utf-8"></script> <script type="text/javascript" src="/_static/js/wombat.js?v=txqj7nKC" charset="utf-8"></script> <script>window.RufflePlayer=window.RufflePlayer||{};window.RufflePlayer.config={"autoplay":"on","unmuteOverlay":"hidden"};</script> <script type="text/javascript" src="/_static/js/ruffle/ruffle.js"></script> <script type="text/javascript"> __wm.init("http://web.archive.org/web"); __wm.wombat("http://www.guardian.co.uk/science/aaas","20120226063915","http://web.archive.org/","web","/_static/", "1330238355"); </script> <link rel="stylesheet" type="text/css" href="/_static/css/banner-styles.css?v=S1zqJCYt" /> <link rel="stylesheet" type="text/css" href="/_static/css/iconochive.css?v=3PDvdIFv" />  <script type="text/javascript"> document.domain = "guardian.co.uk"; </script> <title> AAAS | Science | The Guardian </title> <meta charset="utf-8"/>  <script type="text/javascript"> //<![CDATA[ OAS_url = 'http://web.archive.org/web/20120226063915/http://oas.guardian.co.uk/RealMedia/ads/'; OAS_sitepage = "www.guardian.co.uk/science/aaas/oas.html"; OAS_listpos = 'Top,Right1,x31'; OAS_query = 'k=aaas&cf=not+commercially+useful&pid=&ct=&pt=keyword&'; OAS_target = '_blank'; OAS_rn = '001234567890'; OAS_rns = '1234567890'; OAS_rn = new String (Math.random()); OAS_rns = OAS_rn.substring (2, 11); //]]> </script> <meta http-equiv="Content-Style-Type" content="text/css"/> <link rel="canonical" href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/aaas"/> <meta name="description" content="Latest news and comment on AAAS from guardian.co.uk"/> <meta name="DC.date.issued" content="2008-02-12"> <meta name="keywords" content="AAAS,Science"/> <link rel="shortcut icon" href="/web/20120226063915im_/http://www.guardian.co.uk/favicon.ico" type="image/x-icon"/> <link rel="shorturl" href="http://gu.com/p/x3dz3"/> <link href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/aaas/rss" rel="alternate" type="application/rss+xml" title="rss"/> <script type="text/javascript"> //<![CDATA[ if (!commonStaticRoot) { var commonStaticRoot = "http://web.archive.org/web/20120226063915/http://static.guim.co.uk/static/5e8a33fc00d9d9e6d2e5ca71dd905bae18283811/common/"; } if (!sectionStaticRoot) { var sectionStaticRoot = "http://web.archive.org/web/20120226063915/http://static.guim.co.uk/static/5e8a33fc00d9d9e6d2e5ca71dd905bae18283811/science/"; } if (!staticHost) { var staticHost="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/"; } if (!sitePrefixUrl) { var sitePrefixUrl = "http://web.archive.org/web/20120226063915/http://www.guardian.co.uk"; } //]]> </script> <link rel="alternate stylesheet" title="No layout" type="text/css" href="http://web.archive.org/web/20120226063915cs_/http://static.guim.co.uk/static/5e8a33fc00d9d9e6d2e5ca71dd905bae18283811/common/styles/no-layout.css" media="screen" class="contrast" id="no-layout-sheet"/> <link rel="stylesheet" type="text/css" href="http://web.archive.org/web/20120226063915cs_/http://static.guim.co.uk/static/5e8a33fc00d9d9e6d2e5ca71dd905bae18283811/common/styles/tag-news.css" media="all"/> <link rel="stylesheet" type="text/css" href="http://web.archive.org/web/20120226063915cs_/http://static.guim.co.uk/static/5e8a33fc00d9d9e6d2e5ca71dd905bae18283811/zones/news/styles/zone-accent.css" media="screen" class="contrast"/> <link rel="stylesheet" type="text/css" href="http://web.archive.org/web/20120226063915cs_/http://static.guim.co.uk/static/5e8a33fc00d9d9e6d2e5ca71dd905bae18283811/common/styles/base-typography.css" media="screen"/>     <link rel="stylesheet" type="text/css" href="http://web.archive.org/web/20120226063915cs_/http://combo.guim.co.uk/5e8a33fc00d9d9e6d2e5ca71dd905bae18283811/badge+default-ad-placeholders+header-local-info+internal-external-links+lead-trailblock+pagination+standard-trailblock+top-navigation.css"/> <link rel="stylesheet" type="text/css" href="http://web.archive.org/web/20120226063915cs_/http://combo.guim.co.uk/5e8a33fc00d9d9e6d2e5ca71dd905bae18283811/m-661~static/1780/comment-counts.css"/> <link rel="stylesheet" type="text/css" href="http://web.archive.org/web/20120226063915cs_/http://static.guim.co.uk/static/5e8a33fc00d9d9e6d2e5ca71dd905bae18283811/common/styles/tag-news-typography.css" media="screen"/> <script type="text/javascript"> var _sf_startpt=(new Date()).getTime(); </script> <script src="//web.archive.org/web/20120226063915js_/http://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js"></script> <script>window.jQuery || document.write('<script src="http://web.archive.org/web/20120226063915/http://static.guim.co.uk/static/5e8a33fc00d9d9e6d2e5ca71dd905bae18283811/common/scripts/libs/jquery/1.6.4/jquery.min.js">\x3C/script>')</script> <script src="http://web.archive.org/web/20120226063915js_/http://static.guim.co.uk/static/5e8a33fc00d9d9e6d2e5ca71dd905bae18283811/common/scripts/libs/jquery/cookie/1.0.0/jquery.cookie.js"></script> <script src="http://web.archive.org/web/20120226063915js_/http://static.guim.co.uk/static/5e8a33fc00d9d9e6d2e5ca71dd905bae18283811/common/scripts/libs/jquery/writeCapture/1.0.5/jquery.writeCapture.min.js"></script> <script>var jQ = jQuery.noConflict();</script> <script src="//web.archive.org/web/20120226063915js_/http://cdn.optimizely.com/js/10822091.js"></script> <script src="http://web.archive.org/web/20120226063915js_/http://static.guim.co.uk/static/5e8a33fc00d9d9e6d2e5ca71dd905bae18283811/common/scripts/gu-core.js"></script> <script> var thirdPartyReferralCookieService = new guardian.r2.ThirdPartyReferralCookieService(); thirdPartyReferralCookieService.setThirdPartyReferralCookie(); var urlStack = new UrlStack(".guardian.co.uk"); var communitiesSite = false; //<![CDATA[ function init() { urlStack.clearUrlStack(); var signOutLink = document.getElementById("sign-out"); if (signOutLink) { signOutLink.onclick = signOut; } // Purely styling //jQ('.js-show').removeClass('js-show'); } guardian.r2.resourceRoot = "http://web.archive.org/web/20120226063915/http://resource.guim.co.uk/"; var pageUrl = "http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/aaas"; var pageSignature = "fac833013795bddd8150c2f08d475c78f108610fc5f597e5470007b2a5e14ca4"; jQ(document).ready(init); var SIGN_IN_URL = 'http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/tools/signin'; var RESOURCE_ROOT = 'http://web.archive.org/web/20120226063915/http://resource.guim.co.uk/'; var PROFILE_LINK_VIEW = "http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/discussion/user/"; </script> <script src="http://web.archive.org/web/20120226063915js_/http://static.guim.co.uk/static/5e8a33fc00d9d9e6d2e5ca71dd905bae18283811/common/scripts/libs/requirejs/1.0.2/requirejs.js" data-main="http://static.guim.co.uk/static/5e8a33fc00d9d9e6d2e5ca71dd905bae18283811/common/scripts/main.js" data-modules="init" data-callback="" id="require-js"></script> <script type="text/javascript"> //<![CDATA[ function insertStyleSheet(href) { var styleObject = document.createElement('link'); styleObject.setAttribute('href', commonStaticRoot + href); styleObject.setAttribute('type', 'text/css'); styleObject.setAttribute('media', 'screen'); styleObject.setAttribute('rel', 'stylesheet'); var head = document.getElementsByTagName('head')[0]; head.appendChild(styleObject); } insertStyleSheet('styles/js-on.css'); insertPluckStylesheet = true; //]]> </script> <script type="text/javascript" src="http://web.archive.org/web/20120226063915js_/http://combo.guim.co.uk/5e8a33fc00d9d9e6d2e5ca71dd905bae18283811/common/scripts/convertJSONtoAd+common/scripts/guardian.r2.OmnitureTracking+common/scripts/signinTopNav.js"></script> <script type="text/javascript" src="http://web.archive.org/web/20120226063915js_/http://combo.guim.co.uk/5e8a33fc00d9d9e6d2e5ca71dd905bae18283811/m-661~static/1780/fill-comment-counts.js"></script> <script src="http://web.archive.org/web/20120226063915js_/http://static.guim.co.uk/static/5e8a33fc00d9d9e6d2e5ca71dd905bae18283811/common/external-scripts/mvt/cm_lib_compressed.js"></script> <script type="text/javascript"> ensurePackage('guardian.r2.omniture'); guardian.r2.omniture.isAvailable = function(){ return true; } </script> </head> <body class="boss-tag keyword-page"> <div id="wrapper"> <div id="header"> <div id="sub-header"> <div class="top-navigation twelve-col top-navigation-js"> <div class="user-functions"> <div id="video-settings"> <div class="cookied"> <p class="on"><a class="autoplay-off" href="#skiplinks">Turn autoplay off</a></p> <p class="off"><a class="autoplay-on" href="#skiplinks">Turn autoplay on</a></p> </div> <div class="not-cookied"> <p>Please activate cookies in order to turn autoplay off</p> </div> </div> <div id="skiplinks"> <ul> <li><a href="#box" accesskey="s">Jump to content [s]</a></li> <li><a href="#global-nav" accesskey="0">Jump to site navigation [0]</a></li> <li><a href="#searchbeta" accesskey="4">Jump to search [4]</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://guardian.co.uk/Users/help/article/0,,933909,00.html" accesskey="8">Terms and conditions [8]</a></li> </ul> </div> <div id="edition-selector"> <div id="drop-down-edition" class="drop-down" tabindex="20"> <h2>Edition: <span class="current-edition">UK</span></h2> <ul class="initially-off"> <li><a id="editionSwitchLink" href="http://web.archive.org/web/20120226063915/http://www.guardiannews.com/?INTCMP=ILCNETTXT9475">US</a></li> </ul> </div> </div> <div class="user-details"> <span><a class="same-page-login-required" href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/identity/signin?returnUrl=http://www.guardian.co.uk/science/aaas&sig=fac833013795bddd8150c2f08d475c78f108610fc5f597e5470007b2a5e14ca4">Sign in</a></span> <span><a href="http://web.archive.org/web/20120226063915/http://m.guardian.co.uk/" class="register-required">Mobile</a></span> </div> <div id="drop-down-1" class="drop-down" tabindex="21"> <h2> About us </h2> <ul> <li> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/information/0,,711853,00.html" class="link-text">About us</a> </li> <li> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/gu_contacts/0,,180767,00.html" class="link-text">Contact us</a> </li> <li> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/gnm-press-office" class="link-text">Press office</a> </li> <li> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/gpc" class="link-text">Guardian Print Centre</a> </li> <li> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/theguardian/page/readerseditor" class="link-text">Guardian readers' editor</a> </li> <li> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/observer-readers-editor" class="link-text">Observer readers' editor</a> </li> <li> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/help/terms-of-service" class="link-text">Terms of service</a> </li> <li> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/help/privacy-policy" class="link-text">Privacy policy</a> </li> <li> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/advertising" class="link-text">Advertising guide</a> </li> <li> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/archive" class="link-text">Digital archive</a> </li> <li> <a href="http://web.archive.org/web/20120226063915/http://guardian.newspaperdirect.com/epaper/viewer.aspx" class="link-text">Digital edition</a> </li> <li> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/weekly" class="link-text">Guardian Weekly</a> </li> <li> <a href="http://web.archive.org/web/20120226063915/http://3276.e-printphoto.co.uk/guardian" class="link-text">Buy Guardian and Observer photos</a> </li> <li> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/subscription-services" class="link-text">Subscribe</a> </li> </ul> </div> </div> <div class="other-functions"> <div id="drop-down-2" class="drop-down mirror" tabindex="22"> <h2> Today's paper </h2> <ul> <li> <a href="http://web.archive.org/web/20120226063915/http://observer.guardian.co.uk/" class="link-text">The Observer</a> </li> <li> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/theobserver/news/comment" class="link-text">Comment</a> </li> <li> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/theobserver/sport" class="link-text">Sport</a> </li> <li> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/theobserver/new-review" class="link-text">New Review</a> </li> <li> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/theobserver/magazine" class="link-text">Magazine</a> </li> <li> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/theobserver/foodmonthly" class="link-text">Observer Food Monthly</a> </li> </ul> </div> <div id="drop-down-3" class="drop-down mirror" tabindex="23"> <h2> Subscribe </h2> <ul> <li> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/subscriber/subscribe-to-the-guardian-and-observer" class="link-text">Subscribe to the Guardian</a> </li> <li> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/mobile/iphone/guardian" class="link-text">iPhone app</a> </li> <li> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/mobile/ipad/guardian-ipad-edition" class="link-text">iPad edition</a> </li> <li> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/mobile/guardian-kindle-edition" class="link-text">Kindle</a> </li> <li> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/extra" class="link-text">Extra</a> </li> <li> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/weekly/subscribe" class="link-text">Guardian Weekly</a> </li> <li> <a href="http://web.archive.org/web/20120226063915/http://guardian.newspaperdirect.com/epaper/viewer.aspx" class="link-text">Digital edition</a> </li> <li> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/subscription-services" class="link-text">All our services</a> </li> </ul> </div> </div> </div> <div id="Top" class=" hide-on-popup"> <div id="ad-placeholder-Top"></div> </div> </div> <div id="guardian-logo"> <a href="http://web.archive.org/web/20120226063915/http://www.guardiannews.com/uk-home"><img src="http://web.archive.org/web/20120226063915im_/http://static.guim.co.uk/static/5e8a33fc00d9d9e6d2e5ca71dd905bae18283811/common/images/logos/the-guardian/news.gif" width="115" height="22" alt="The Guardian home"/></a> </div> <form id="searchbeta" method="get" action="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/search" onsubmit="return searchWeb('http://www.guardian.co.uk/websearch', 'http://www.guardian.co.uk/search', 'http://www.guardian.co.uk/discussion/search/comments/');"> <input type="text" name="q" placeholder="Your search terms..."/> <select name="section" id="gu-site-search" style="z-index: 0 !important;"> <option value="" id="search-guardian">The Guardian</option> <option value="science" id="search-section" selected="selected">Science</option> <option value="search-contributions" id="search-contributions">User comments</option> <option value="web" id="search-web">Web</option> </select> <input type="submit" value="Search"/> </form> <div id="zones-nav"> <div id="global-nav"> <ul> <li class="first news"> <a href="http://web.archive.org/web/20120226063915/http://www.guardiannews.com/uk-home">News</a> </li> <li class="sport"> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/sport">Sport</a> </li> <li class="comment"> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/commentisfree">Comment</a> </li> <li class="culture"> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/culture">Culture</a> </li> <li class="business"> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/business">Business</a> </li> <li class="money"> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/money">Money</a> </li> <li class="life-and-style"> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/lifeandstyle">Life & style</a> </li> <li class="travel"> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/travel">Travel</a> </li> <li class="environment"> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/environment">Environment</a> </li> <li class="culture"> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/tv-and-radio">TV</a> </li> <li class="news"> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/data">Data</a> </li> <li class="global"> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/video">Video</a> </li> <li class="global"> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/mobile/apps">Mobile</a> </li> <li class="global"> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/lifeandstyle/shopping?INTCMP=ILCROFFTXT2094">Offers</a> </li> <li class="last global"> <a href="http://web.archive.org/web/20120226063915/http://jobs.guardian.co.uk/">Jobs</a> </li> </ul> </div> <div class="trackable-component crumb-wrapper" data-component="comp: r2: Crumb Navigation"> <ul class="crumb-nav"> <li id="crumb1"> <a href="http://web.archive.org/web/20120226063915/http://www.guardiannews.com/uk-home">News</a> </li> <li id="crumb2"> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science">Science</a> </li> <li id="crumb3"> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/aaas">AAAS</a> </li> </ul> <ul class="local-nav related-to-crumb3"> <li class="first"> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/scienceprizes">Science prizes</a> </li> <li> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/controversiesinscience">Controversies</a> </li> <li class=" last"> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/list/allsciencekeywords">Keywords A to Z</a> </li> </ul> </div> </div> </div> <div id="box"> <div id="content"> <div id="article-header"> <div class="feeds"> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/aaas/rss" rel="alternate" type="application/rss+xml" title="rss" class="feed">Webfeed</a> </div> <div id="page-heading" class="page-heading trail trailblock"> <h1>AAAS</h1> </div> <div class="news capsule ed-zone editor-zone-3"> <div id="editor-zone-3" class="tri trail trailblock"> <ul class="tri trail trailblock"> <li class=""> <div class="trail-caption"> <div class="linktext"> News from the American Association for the Advancement of Science </div> </div> </li> </ul> </div> </div> </div> <div class="col1"> <span class="trackable-component component-wrapper four-col" data-component="comp: Lead trailblock : Lead story"> <div class="component lead-content standard-trailblock"> <div class="hd"> <h2>Top story</h2> </div> <div class="bd"> <ul> <li class="wide-image"> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/2012/feb/19/science-scepticism-usdomesticpolicy"> <img src="http://web.archive.org/web/20120226063915im_/http://static.guim.co.uk/sys-images/Observer/Pix/pictures/2012/2/18/1329593695832/Polar-Bear-on-ice-007.jpg" width="300" height="180" alt="Polar Bear on ice"/> </a> <h3> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/2012/feb/19/science-scepticism-usdomesticpolicy" class="link-text">Attacks paid for by big business are 'driving science into a dark era'</a> </h3> <div class="trail-text"> <span class="kicker"> <span class="date">19 Feb 2012: </span> </span> <p>Researchers attending one of the world's major academic conferences 'are scared to death of the anti-science lobby'</p> </div> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/2012/feb/19/science-scepticism-usdomesticpolicy#start-of-comments" class="trail-comment-count comments-closed" short-url="-p-35hzg" style="display:none"><span class="comment-count-val"></span></a> </li> </ul> </div> </div> </span> <div id="main-trailblock" class="trailblock"> </div> <div id="pickable-content-combiner" class="pickablecontenttype"> </div> </div> <div class="col"> <h2 class="first">Most recent</h2> <ul id="auto-trail-block" class="auto-trail-block trailblock"> <li class="live first wide image"> <div class="pictureurl"> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/2012/feb/22/older-mothers-more-prone-depression" data-link-name="anchor image" class="link-image"> <img src="http://web.archive.org/web/20120226063915im_/http://static.guim.co.uk/sys-images/Guardian/Pix/pictures/2012/2/21/1329835143184/Older-mother-reads-to-her-008.jpg" width="300" height="180" alt="Older mother reads to her baby son"/> </a> </div> <div class="trail-caption media-above"> <div class="linktext"> <h3> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/2012/feb/22/older-mothers-more-prone-depression" class="link-text">Older mothers may be more prone to depression than younger women</a> </h3> </div> <div class="trailtext"> <span class="date">22 Feb 2012: </span> <p>Preliminary study suggests risk of depression is five times as high among women who have children later in life</p> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/2012/feb/22/older-mothers-more-prone-depression#start-of-comments" class="trail-comment-count comments-closed" short-url="-p-35j9y" style="display:none"><span class="comment-count-val"></span></a> </div> </div> </li> <li class="live"> <div class="trail-caption"> <div class="linktext"> <h3> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/society/2012/feb/21/weight-loss-guidelines-wrong-vancouver" class="link-text">Why the weight is so hard to shift: guidelines have been wrong all along</a> </h3> </div> <div class="trailtext"> <span class="date">21 Feb 2012: </span> <p>Scientists say unrealistic weight loss targets issued because of a failure to allow for changes to metabolism as weight drops off</p> </div> </div> </li> <li class="live image"> <div class="trail-caption"> <div class="linktext"> <h3> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/world/2012/feb/21/whales-dolphins-legal-rights" class="link-text">Whales and dolphins 'should have legal rights'</a> </h3> </div> <div class="trailtext"> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/world/2012/feb/21/whales-dolphins-legal-rights" class="small mask"> <img src="http://web.archive.org/web/20120226063915im_/http://static.guim.co.uk/sys-images/Guardian/Pix/pictures/2012/2/20/1329753940425/Fishermen-drive-bottle-no-002.jpg" class="non-link-image" width="140" height="84" alt="Fishermen drive bottle-nose dolphins into a net during their annual hunt off Taiji, Japan" class="image-in-trail"/> </a> <span class="date">21 Feb 2012: </span> <p>Campaign for intelligent marine mammals to have right to life, which would protect them from hunters and captivity</p> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/world/2012/feb/21/whales-dolphins-legal-rights#start-of-comments" class="trail-comment-count comments-closed" short-url="-p-35tjf" style="display:none"><span class="comment-count-val"></span></a> </div> </div> </li> <li class="live"> <div class="trail-caption"> <div class="linktext"> <h3> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/2012/feb/20/vocabulary-tests-identify-late-speakers" class="link-text">Vocabulary tests on two-year-olds can identify those who will be late talkers</a> </h3> </div> <div class="trailtext"> <span class="date">20 Feb 2012: </span> <p>Children who can speak 50 words or fewer at age two may benefit from early language therapy, say researchers</p> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/2012/feb/20/vocabulary-tests-identify-late-speakers#start-of-comments" class="trail-comment-count comments-closed" short-url="-p-35txq" style="display:none"><span class="comment-count-val"></span></a> </div> </div> </li> <li class="live"> <div class="trail-caption"> <div class="linktext"> <h3> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/2012/feb/20/open-hospital-windows-stem-infections" class="link-text">Open hospital windows to stem spread of infections, says microbiologist</a> </h3> </div> <div class="trailtext"> <span class="date">20 Feb 2012: </span> AAAS meeting told to take a leaf out of Florence Nightingale book and allow in air, and microbes, to control nasty pathogens <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/2012/feb/20/open-hospital-windows-stem-infections#start-of-comments" class="trail-comment-count comments-closed" short-url="-p-35txg" style="display:none"><span class="comment-count-val"></span></a> </div> </div> </li> <li class="live image"> <div class="trail-caption"> <div class="linktext"> <h3> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/2012/feb/19/science-scepticism-usdomesticpolicy" class="link-text">Attacks paid for by big business are 'driving science into a dark era'</a> </h3> </div> <div class="trailtext"> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/2012/feb/19/science-scepticism-usdomesticpolicy" class="small mask"> <img src="http://web.archive.org/web/20120226063915im_/http://static.guim.co.uk/sys-images/Observer/Pix/pictures/2012/2/18/1329593690636/Polar-Bear-on-ice-003.jpg" class="non-link-image" width="140" height="84" alt="Polar Bear on ice" class="image-in-trail"/> </a> <span class="date">19 Feb 2012: </span> <p>Researchers attending one of the world's major academic conferences 'are scared to death of the anti-science lobby'</p> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/2012/feb/19/science-scepticism-usdomesticpolicy#start-of-comments" class="trail-comment-count comments-closed" short-url="-p-35hzg" style="display:none"><span class="comment-count-val"></span></a> </div> </div> </li> <li class="live"> <div class="trail-caption"> <div class="linktext"> <h3> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/society/2012/feb/18/fasting-protect-brain-diseases-scientists" class="link-text">Fasting can help protect against brain diseases, scientists say</a> </h3> </div> <div class="trailtext"> <span class="date">18 Feb 2012: </span> <p>Claim that giving up almost all food for one or two days a week can counteract impact of Alzheimer's and Parkinson's</p> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/society/2012/feb/18/fasting-protect-brain-diseases-scientists#start-of-comments" class="trail-comment-count comments-open" short-url="-p-35hmg" style="display:none"><span class="comment-count-val"></span></a> </div> </div> </li> <li class="live"> <div class="trail-caption"> <div class="linktext"> <h3> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/2012/feb/18/mobile-nature-reserves-marine-species" class="link-text">'Mobile nature reserves' could save marine species from extinction</a> </h3> </div> <div class="trailtext"> <span class="date">18 Feb 2012: </span> <p>Under the plans, trawlers would avoid stretches of ocean when endangered species are mating, spawning or passing through</p> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/2012/feb/18/mobile-nature-reserves-marine-species#start-of-comments" class="trail-comment-count comments-closed" short-url="-p-35hkp" style="display:none"><span class="comment-count-val"></span></a> </div> </div> </li> <li class="live image"> <div class="trail-caption"> <div class="linktext"> <h3> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/2012/feb/17/vaccine-norovirus-winter-vomiting-bug" class="link-text">Vaccine developed to protect against norovirus or 'winter vomiting bug'</a> </h3> </div> <div class="trailtext"> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/2012/feb/17/vaccine-norovirus-winter-vomiting-bug" class="small mask"> <img src="http://web.archive.org/web/20120226063915im_/http://static.guim.co.uk/sys-images/Guardian/Pix/pictures/2012/2/17/1329491077054/Particles-of-norovirus-th-003.jpg" class="non-link-image" width="140" height="84" alt="Particles of norovirus, the 'winter vomiting bug'" class="image-in-trail"/> </a> <span class="date">17 Feb 2012: </span> A vaccine for norovirus, which is highly infectious and is difficult to kill by cleaning, could be availabe within five years <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/2012/feb/17/vaccine-norovirus-winter-vomiting-bug#start-of-comments" class="trail-comment-count comments-closed" short-url="-p-35hc9" style="display:none"><span class="comment-count-val"></span></a> </div> </div> </li> <li class="live"> <div class="trail-caption"> <div class="linktext"> <h3> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/2012/feb/17/videogames-eyesight-rare-eye-disorder" class="link-text">Video games improve sight in adults born with a rare eye disorder</a> </h3> </div> <div class="trailtext"> <span class="date">17 Feb 2012: </span> <p>Study challenges view that video games are bad for sight and suggests the brain can be trained to overcome some conditions</p> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/2012/feb/17/videogames-eyesight-rare-eye-disorder#start-of-comments" class="trail-comment-count comments-closed" short-url="-p-35h8c" style="display:none"><span class="comment-count-val"></span></a> </div> </div> </li> <li class="live"> <div class="trail-caption"> <div class="linktext"> <h3> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/environment/2012/feb/16/shale-gas-regulations-scientists-us" class="link-text">Tighten fracking regulations, scientists urge US officials</a> </h3> </div> <div class="trailtext"> <span class="date">16 Feb 2012: </span> <p>Influential group calls on regulators to ensure safe handling of toxic fluids used in controversial hydraulic fracturing</p> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/environment/2012/feb/16/shale-gas-regulations-scientists-us#start-of-comments" class="trail-comment-count comments-closed" short-url="-p-35gbp" style="display:none"><span class="comment-count-val"></span></a> </div> </div> </li> <li class="live image"> <div class="trail-caption"> <div class="linktext"> <h3> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/audio/2012/feb/16/auditory-illusion-inspired-builders-stonehenge" class="link-text">Did this auditory illusion inspire the builders of Stonehenge?</a> </h3> </div> <div class="trailtext"> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/audio/2012/feb/16/auditory-illusion-inspired-builders-stonehenge" class="small mask"> <img src="http://web.archive.org/web/20120226063915im_/http://static.guim.co.uk/sys-images/Guardian/Pix/pictures/2010/11/18/1290115931016/Stonehenge--002.jpg" class="non-link-image" width="140" height="84" alt="Stonehenge " class="audio-mask" class="image-in-trail audio-mask"/> </a> <strong> <span> Audio <span>(50 sec)</span>, </span> </strong> <span class="date">16 Feb 2012: </span> <p>A researcher has linked a form of auditory interference to the layout of the ancient monument on Salisbury Plain</p> </div> </div> </li> <li class="live"> <div class="trail-caption"> <div class="linktext"> <h3> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/2012/feb/16/microchip-implant-drug-doses-osteoporosis" class="link-text">Microchip implant delivers timed drug doses to patients with osteoporosis</a> </h3> </div> <div class="trailtext"> <span class="date">16 Feb 2012: </span> <p>Successful trial is a step towards an implantable 'pharmacy-on-a-chip' for treating other long-term conditions</p> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/2012/feb/16/microchip-implant-drug-doses-osteoporosis#start-of-comments" class="trail-comment-count comments-closed" short-url="-p-35ggb" style="display:none"><span class="comment-count-val"></span></a> </div> </div> </li> <li class="live"> <div class="trail-caption"> <div class="linktext"> <h3> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/2012/feb/16/stonehenge-based-magical-auditory-illusion" class="link-text">Stonehenge was based on a 'magical' auditory illusion, says scientist</a> </h3> </div> <div class="trailtext"> <span class="date">16 Feb 2012: </span> <p>The layout of Stonehenge matches the spacing of loud and quiet sounds created by acoustic interference, new theory claims</p> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/2012/feb/16/stonehenge-based-magical-auditory-illusion#start-of-comments" class="trail-comment-count comments-closed" short-url="-p-35gtq" style="display:none"><span class="comment-count-val"></span></a> </div> </div> </li> <li class="live image"> <div class="trail-caption"> <div class="linktext"> <h3> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/audio/2011/feb/28/science-weekly-podcast-aaas-david-nutt" class="link-text">Science Weekly podcast: AAAS 2011, drugs and the sound of the stars</a> </h3> </div> <div class="trailtext"> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/audio/2011/feb/28/science-weekly-podcast-aaas-david-nutt" class="small mask"> <img src="http://web.archive.org/web/20120226063915im_/http://static.guim.co.uk/sys-images/Guardian/Pix/pictures/2007/12/20/house140.jpg" class="non-link-image" width="140" height="84" alt="The White House" class="audio-mask" class="image-in-trail audio-mask"/> </a> <strong> <span> Audio <span>(36min 11sec)</span>, </span> </strong> <span class="date">28 Feb 2011: </span> <p>The highlights of this year's AAAS science festival in Washington DC, professor David Nutt explains his latest research on reclassifying drugs; plus, the sound of the stars</p> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/audio/2011/feb/28/science-weekly-podcast-aaas-david-nutt#start-of-comments" class="trail-comment-count comments-closed" short-url="-p-2nchg" style="display:none"><span class="comment-count-val"></span></a> </div> </div> </li> </ul> <ul class="pagination b3"> <li class="last"><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/aaas?page=2" rel="nofollow">Next</a></li> <li>1</li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/aaas?page=2" rel="nofollow">2</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/aaas?page=3" rel="nofollow">3</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/aaas?page=4" rel="nofollow">4</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/aaas?page=5" rel="nofollow">5</a></li> </ul> <p class="explainer"> 1-15 of 66 for AAAS </p> </div> <div id="related"> <div class="col1"> <div class="factbox-container"> </div> <div id="pickable-sibling-relationship" class="pickabletagrelationship"> <div class="capsule"> <h3>Related subjects</h3> <h4><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science">Science</a></h4> <ul class="child-keyword"> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/medical-research">Medical research</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/scienceofclimatechange">Climate change</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/genetics">Genetics</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/biology">Biology</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/neuroscience">Neuroscience</a></li> <li><p class="shower"><a title="Show five more subjects related to Science" href="#more-parent-Science" class="shower"><span class="remaining">Show five more…</span><span class="first-selection">…</span></a></p></li> </ul> <ul id="more-parent-Science" class="keywords sub-list"> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/space">Space</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/zoology">Zoology</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/energy">Energy research</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/physics">Physics</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/psychology">Psychology</a></li> </ul> <h4><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/environment">Environment</a></h4> <ul class="child-keyword"> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/environment/climate-change">Climate change</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/environment/marine-life">Marine life</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/environment/biodiversity">Biodiversity</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/environment/wildlife">Wildlife</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/environment/energy">Energy</a></li> <li><p class="shower"><a title="Show five more subjects related to Environment" href="#more-parent-Environment" class="shower"><span class="remaining">Show five more…</span><span class="first-selection">…</span></a></p></li> </ul> <ul id="more-parent-Environment" class="keywords sub-list"> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/environment/fishing">Fishing</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/environment/carbon-emissions">Carbon emissions</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/environment/endangered-habitats">Endangered habitats</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/environment/oceans">Oceans</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/environment/pollution">Pollution</a></li> </ul> <h4><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/society">Society</a></h4> <ul class="child-keyword"> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/society/health">Health</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/society/alzheimers">Alzheimer's</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/society/hiv-infection">Aids and HIV</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/society/cancer">Cancer</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/society/mrsa">MRSA and superbugs</a></li> <li><p class="shower"><a title="Show five more subjects related to Society" href="#more-parent-Society" class="shower"><span class="remaining">Show five more…</span><span class="first-selection">…</span></a></p></li> </ul> <ul id="more-parent-Society" class="keywords sub-list"> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/society/obesity">Obesity</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/society/alcohol">Alcohol</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/society/allergies">Allergies</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/society/blindness">Blindness and visual impairment</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/society/bowel-cancer">Bowel cancer</a></li> </ul> <h4><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/world">World news</a></h4> <ul class="child-keyword"> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/world/animals">Animals</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/world/usa">United States</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/world/animal-welfare">Animal welfare</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/world/ethics">Ethics</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/world/americas">Americas</a></li> <li><p class="shower"><a title="Show four more subjects related to World news" href="#more-parent-World-news" class="shower"><span class="remaining">Show four more…</span><span class="first-selection">…</span></a></p></li> </ul> <ul id="more-parent-World-news" class="keywords sub-list"> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/world/barack-obama">Barack Obama</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/world/costa-rica">Costa Rica</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/world/usdomesticpolicy">US domestic policy</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/world/us-elections-2012">US elections 2012</a></li> </ul> <h4><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/lifeandstyle">Life and style</a></h4> <ul class="child-keyword"> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/lifeandstyle/health-and-wellbeing">Health & wellbeing</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/lifeandstyle/diets-dieting">Diets and dieting</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/lifeandstyle/family">Family</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/lifeandstyle/fish">Fish</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/lifeandstyle/food-and-drink">Food & drink</a></li> <li><p class="shower"><a title="Show three more subjects related to Life and style" href="#more-parent-Life-and-style" class="shower"><span class="remaining">Show three more…</span><span class="first-selection">…</span></a></p></li> </ul> <ul id="more-parent-Life-and-style" class="keywords sub-list"> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/lifeandstyle/nutrition">Nutrition</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/lifeandstyle/pregnancy">Pregnancy</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/lifeandstyle/relationships">Relationships</a></li> </ul> </div> </div> <div id="pickable-child-relationship" class="pickabletagrelationship"> </div> <div id="pickable-folder-relationship" class="pickabletagrelationship"> </div> </div> <div class="col"> </div> </div> </div> <div id="promo">  <span class="trackable-component component-wrapper four-col" data-component="comp: Flexible right hand slot advert : right hand ad slot on all sites"> <div id="Right1" class=" hide-on-popup"> <div id="ad-placeholder-Right1"></div> </div> </span> <span class="trackable-component component-wrapper four-col" data-component="microapp: zeitgeist : Most Viewed Old Promo : Most viewed by section - Zeitgeist"> <style> .m-zeitgeist .bd { float: left } /* for the IE6 lols */ .m-zeitgeist .hd { padding-bottom: 0px; margin-bottom: -12px} .m-zeitgeist .hd h2 { padding-bottom: 12px; } .m-zeitgeist #att-panes { background-color: #fff; float: left; } .m-zeitgeist .att-toggle-pane { min-width:280px; } .m-zeitgeist ol { padding: 0 5px; } .m-zeitgeist #most-zeitgeist ol { padding-left: 0; } .m-zeitgeist .zg-date { color: #D61D00; padding-left:5px; padding-top: 5px; } .m-zeitgeist ol li { clear: both; padding-left: 15px; } .m-zeitgeist div#att-most-viewed ol li.l1, .m-zeitgeist div#att-latest ol li.l1 { padding-bottom: 9px !important; } .m-zeitgeist ol li.footer { clear: both; padding-left: 0px !important; padding-top: 5px !important; } .m-zeitgeist .rank { float: left; margin-left: -15px; } .m-zeitgeist .kicker { font-weight: bold; } .m-zeitgeist ol li.thumb { padding-left: 0; } .m-zeitgeist ol li.thumb .rank { margin-left: 0; } .m-zeitgeist ol li img { float: left; margin: 0 10px 3px 0; } .m-zeitgeist #most-zeitgeist ol li { border-top: none; padding: 0; border-top: none; } .m-zeitgeist #most-zeitgeist ol li .zeit-link {background-color: #fff; padding: 5px 0 9px 5px; border-top: 1px dotted #999; margin-bottom: 0px; } .m-zeitgeist #most-zeitgeist ol li.footer { border-top:1px dotted #999; padding: 5px 0 9px 10px; margin-left: 5px } .m-zeitgeist #most-zeitgeist .m-zeigeist ol { padding-left: 0} /* zeit-up */ .m-zeitgeist #most-zeitgeist .what-is { float: none; padding: 0 3px; vertical-align: middle; cursor: pointer; } .about-zeit { position: relative; } .zeit-popup { position: absolute; display: none; background-color: #dbedf3; color: #333; padding: 6px; width: 200px; } .fade-1 { border-left: 5px solid #801100 !important;} .fade-2 { border-left: 5px solid #95382A !important;} .fade-3 { border-left: 5px solid #AA5F54 !important;} .fade-4 { border-left: 5px solid #BF867E !important;} .fade-5 { border-left: 5px solid #D4ADA8 !important;} .m-zeitgeist div.hd { padding-bottom: 0; } .m-zeitgeist.most-viewed div.hd { padding-bottom: 7px; } </style> <script type="text/javascript"> jQ(function($){$('.about-zeit').each(function(){var distance=-10;var time=250;var hideDelay=500;var hideDelayTimer=null;var beingShown=false;var shown=false;var trigger=$('.what-is',this);var info=$('.zeit-popup',this).css('opacity',0);$([trigger.get(0),info.get(0)]).mouseover(function(){if(hideDelayTimer)clearTimeout(hideDelayTimer);if(beingShown||shown){return;}else{beingShown=true;info.css({top:-97,right:0,display:'block'}).animate({top:'-='+distance+'px',opacity:1},time,'swing',function(){beingShown=false;shown=true;});}return false;}).mouseout(function(){if(hideDelayTimer)clearTimeout(hideDelayTimer);hideDelayTimer=setTimeout(function(){hideDelayTimer=null;info.animate({top:'-='+distance+'px',opacity:0},time,'swing',function(){shown=false;info.css('display','none');});},hideDelay);return false;});});}); </script>  <div class="m-zeitgeist promo-component four-col attention-data"> <div class="hd"> <h3>On Science</h3> </div> <div class="bd"> <div id="att-toggle"> <ul class="tabs"> <li> <a class="active" href="#att-most-viewed">Most viewed</a> </li> <li> <a class="inactive" href="#most-zeitgeist">Zeitgeist</a> </li> <li> <a class="inactive" href="#att-latest">Latest</a> </li> </ul> <div id="att-panes"> <div class="att-tabs att-toggle-pane" id="att-most-viewed"> <p class="b2 zg-date">Last 24 hours</p> <ol> <li class="l1 thumb"> <img src="http://web.archive.org/web/20120226063915im_/http://static.guim.co.uk/sys-images/Guardian/Pix/pictures/2012/2/23/1330006269570/Scientist-looking-down-a--004.jpg"/> <span class="rank">1. </span> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/blog/2012/feb/23/science-communication-goes-viral">Science communication goes viral</a> </li> <li class="l1"> <span class="rank">2. </span> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/2012/feb/19/science-scepticism-usdomesticpolicy">Attacks paid for by big business are 'driving science into a dark era'</a> </li> <li class="l1"> <span class="rank">3. </span> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/neurophilosophy/2012/feb/23/brain-new-cells-adult-neurogenesis">Does your brain produce new cells?</a> </li> <li class="l1"> <span class="rank">4. </span> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/2012/feb/26/krister-shalm-swing-dance-quantum-physics">Krister Shalm: the lindy hop can explain quantum mechanics</a> </li> <li class="l1"> <span class="rank">5. </span> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/2012/feb/12/black-scholes-equation-credit-crunch">The mathematical equation that caused the banks to crash</a> </li> <li class="more-most-viewed l1 footer"> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/most-viewed/science">More most viewed</a> </li> </ol> </div> <div class="att-tabs att-toggle-pane initially-off" id="most-zeitgeist"> <p class="b2 zg-date">Last 24 hours</p> <ol> <li class="l1 science fade-1"> <div class="zeit-link"><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/blog/2012/feb/21/death-denial-hiv-aids">Death by denial: The campaigners who continue to deny HIV causes Aids</a></div> </li> <li class="l1 science fade-2"> <div class="zeit-link"><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/blog/2012/feb/23/scientists-basic-research-business">Scientists have sold their souls – and basic research – to business</a></div> </li> <li class="l1 science fade-3"> <div class="zeit-link"><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/blog/2012/feb/23/science-communication-goes-viral">Science communication goes viral</a></div> </li> <li class="l1 science fade-4"> <div class="zeit-link"><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/2012/feb/19/science-scepticism-usdomesticpolicy">Attacks paid for by big business are 'driving science into a dark era'</a></div> </li> <li class="l1 science fade-5"> <div class="zeit-link"><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/2012/feb/23/faster-light-neutrinos-faulty-connection">Faster-than-light neutrinos: was a faulty connection to blame?</a></div> </li> <li class="l1 footer about-zeit"> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/zeitgeist">More zeitgeist</a> <img class="what-is" alt="What is Zeigeist?" title="" src="http://web.archive.org/web/20120226063915im_/http://static.guim.co.uk/microapps/zeitgeist/about-zeitgeist.gif"/> <div id="zeit-popup" class="zeit-popup"> <strong>What is Zeitgeist?</strong> <p>Zeitgeist is an experiment in showing trending news, topics and articles from the Guardian. Find out more in <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/help/insideguardian/2010/feb/03/zeitgeist">our blog post</a>.</p> </div> </li> </ol> </div> <div class="att-tabs att-toggle-pane initially-off" id="att-latest"> <p class="b2 zg-date">Last 24 hours</p> <ol> <li class="l1 thumb"> <img src="http://web.archive.org/web/20120226063915im_/http://static.guim.co.uk/sys-images/Observer/Pix/pictures/2012/2/23/1330002422202/krister-shalm-jumping-in--003.jpg"/> <span class="rank">1. </span> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/2012/feb/26/krister-shalm-swing-dance-quantum-physics">Krister Shalm: the lindy hop can explain quantum mechanics</a> </li> <li class="l1"> <span class="rank">2. </span> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/grrlscientist/2012/feb/25/4">Mystery bird: golden whistler, Pachycephala pectoralis</a> </li> <li class="l1"> <span class="rank">3. </span> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/grrlscientist/2012/feb/25/7">Today's mystery bird for you to identify</a> </li> <li class="l1"> <span class="rank">4. </span> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/life-and-physics/2012/feb/25/1">Gaming the system? Neutrinos, theorists and citations</a> </li> <li class="l1"> <span class="rank">5. </span> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/grrlscientist/2012/feb/25/1">Twirl-a-squirrel champ</a> </li> <li class="more-latest l1 footer"> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/science/all">All today's stories</a> </li> </ol> </div> </div> </div> </div> </div> </span> <span class="trackable-component component-wrapper four-col" data-component="microapp: guardian-bookshop : Bestsellers : bookshop"> <style> .m-guardianbookshop .rank { float: left; margin-left: -15px; } .m-guardianbookshop .thumb .rank { margin-left: 0; } .m-guardianbookshop h4 { border-top: none !important; font-weight: bold; margin-left: 5px !important; padding: 5px 0 8px 0 !important; } .m-guardianbookshop .bestsellers { background-color: #fff; padding-bottom: 17px;} .m-guardianbookshop ol { padding: 0 5px; } .m-guardianbookshop .l1 { clear: both; padding-left: 15px; } .m-guardianbookshop .thumb { padding-left: 0; } .m-guardianbookshop .thumb img { float: left; margin: 2px 10px 9px 0;} .m-guardianbookshop .price { display: inline; } .m-guardianbookshop .thumb .price { display: block; } .m-guardianbookshop .rank, .m-guardianbookshop .book-title { font-weight: bold; } .m-guardianbookshop input { border: 1px solid #999; width: 75%; min-height: 16px; margin-top: 8px; padding: 3px 2px;} </style> <div class="m-guardianbookshop promo-component"> <div class="hd"> <h3> <a href="http://web.archive.org/web/20120226063915/http://www.guardianbookshop.co.uk/"><img src="http://web.archive.org/web/20120226063915im_/http://resource.guim.co.uk/global/static/proxy?url=http%3A%2F%2Fgu-books.appspot.com%2Fimg%2Flogo-guardian-bookshop.png" alt="Guardian Bookshop" title=""/></a> </h3> </div> <div class="bd"> <div class="bestsellers"> <h4>This week's bestsellers</h4> <ol> <li class="l1 thumb"> <img src="http://web.archive.org/web/20120226063915im_/http://resource.guim.co.uk/books/gubookshop/thumbnail/images.bertrams.com/ProductImages/services/GetImage?Source=BERT&Quality=WEB&EAN13=9781444727920&Component=FRONTCOVER" title="Science Delusion"/> <span class="rank">1. </span> <a href="http://web.archive.org/web/20120226063915/http://www.guardianbookshop.co.uk/BerteShopWeb/viewProduct.do?ISBN=9781444727920" class="book-title">Science Delusion</a> <p> by Rupert Sheldrake <span class="price">£19.99</span> </p> </li> <li class="l1"> <span class="rank">2. </span> <a href="http://web.archive.org/web/20120226063915/http://www.guardianbookshop.co.uk/BerteShopWeb/viewProduct.do?ISBN=9780141032139" class="book-title">Moonwalking with Einstein</a> <p> by Joshua Foer <span class="price">£9.99</span> </p> </li> <li class="l1"> <span class="rank">3. </span> <a href="http://web.archive.org/web/20120226063915/http://www.guardianbookshop.co.uk/BerteShopWeb/viewProduct.do?ISBN=9780141041452" class="book-title">Periodic Tales</a> <p> by Hugh Aldersey-Williams <span class="price">£9.99</span> </p> </li> <li class="l1"> <span class="rank">4. </span> <a href="http://web.archive.org/web/20120226063915/http://www.guardianbookshop.co.uk/BerteShopWeb/viewProduct.do?ISBN=9780306819117" class="book-title">Why Does E=mc2?</a> <p> by Brian Cox <span class="price">£8.99</span> </p> </li> <li class="l1"> <span class="rank">5. </span> <a href="http://web.archive.org/web/20120226063915/http://www.guardianbookshop.co.uk/BerteShopWeb/viewProduct.do?ISBN=9781402788291" class="book-title">Math Book</a> <p> by Clifford Pickover <span class="price">£12.99</span> </p> </li> </ol> </div> <div class="search"> <p> Search the Guardian bookshop </p> <form method="POST" action="http://web.archive.org/web/20120226063915/http://www.guardianbookshop.co.uk/BerteShopWeb/search.do" name="QuickSearchForm"> <input type="text" class="searchBox" value="" name="keyword"> <button class="searchBtn" type="submit"> <span class="searchText">Search</span> </button> <input type="hidden" value="" name="author"> </form> </div> </div> </div> </span> <span class="trackable-component component-wrapper four-col" data-component="comp: Shopping reader offers : readeroffers on science"> <div class="reader-offers promo-component"> <div class="hd"> <h3>Bestsellers from the Guardian shop</h3> </div> <div class="bd"> <ul> <li class="inline-pic"><a href="http://web.archive.org/web/20120226063915/http://www.guardianoffers.co.uk/mall/productpage.cfm/GuardianOffers/TRUMEM1B/119268" class="link-image"> <img src="http://web.archive.org/web/20120226063915im_/http://www.guardianoffers.co.uk/mall/GOTruebellUKLtd/customerimages/products/t_TRUMEM1B.jpg" alt="Steepletone Memphis music centre"/> </a></li> <li><p class="t6"><a href="http://web.archive.org/web/20120226063915/http://www.guardianoffers.co.uk/mall/productpage.cfm/GuardianOffers/TRUMEM1B/119268">Steepletone Memphis music centre</a></p></li> <li><p>Play your cherished vinyl, tapes and CDs or transfer them to digital format for just £149.95.</p></li> <li><p class="price">From: £7.95</p></li> </ul> </div> <div class="ft"> <ul> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardianoffers.co.uk/">Shop more reader offers</a></li> <li><a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/lifeandstyle/shopping">See all offers and services from the Guardian</a></li> </ul> </div> </div> </span> <span class="trackable-component component-wrapper four-col" data-component="comp: Sponsored features : sponsored features"> <div class="promo-component json-features x31 four-col" style="display: none;"> <div class="hd"> <h3>Sponsored feature</h3> </div> <div class="bd inline-pic"> <a href="" class="link-image"><img width="130" height="121" alt=""/></a> <div id="x31" class=" hide-on-popup"> <div id="ad-placeholder-x31"></div> </div> <span class="x31-script-placeholder"></span> <script> function showSponsoredFeaturex31(){ if (window.sponJSON) { if(typeof(sponJSON) === 'object') { adx31 = sponJSON; var node = jQ('.json-features.x31'); convertJSONtoAd( node.find('img:first-child'), node.find('a.t6'), node.find('p:last-child'), adx31, node.find('.hd').children().eq(0), 'x31' ); } } } jQ(document).ready(function(){ jQ('.x31-script-placeholder').writeCapture().replaceWith('<script>showSponsoredFeaturex31()<' + '/script>') }) </script> <a href="" class="t6"></a> <p></p> </div> </div> </span> <div id="promo" class="four-col edge"> <span class="trackable-component component-wrapper four-col" data-component="comp: Advertiser links for promo slot : Bottom advertiserlinks"> <script type="text/javascript"> google_ad_client = 'ca-guardian_js'; google_ad_channel = 'science'; </script> <script> google_max_num_ads = '3'; </script> <div id="google-ads-container" class="four-col promo-component advertiser-links" style="display: none;"></div> <script type="text/javascript"> //<![CDATA[ if (true) { writeScript("http://web.archive.org/web/20120226063915/http://pagead2.googlesyndication.com/pagead/show_ads.js", false, function(){}); } // ]]> </script> </span> </div> </div> </div>  <div id="footer-container"> <div id="footer" class="news footer b4"> <ul id="footer-links"> <li> <a href="http://web.archive.org/web/20120226063915/http://syndication.guardian.co.uk/" class="link-text">License/buy our content</a> </li> | <li> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/help/privacy-policy" class="link-text">Privacy policy</a> </li> | <li> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/help/terms-of-service" class="link-text">Terms & conditions</a> </li> | <li> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/advertising" class="link-text">Advertising guide</a> </li> | <li> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/help/accessibility" class="link-text">Accessibility</a> </li> | <li> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/index/subjects/a" class="link-text">A-Z index</a> </li> | <li> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/help/insideguardian" class="link-text">Inside the Guardian blog</a> </li> | <li> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/info" class="link-text">About us</a> </li> | <li> <a href="http://web.archive.org/web/20120226063915/http://www.guardian.co.uk/workforus" class="link-text">Work for us</a> </li> | <li> <a href="http://web.archive.org/web/20120226063915/https://soulmates.guardian.co.uk/" class="link-text">Join our dating site today</a> </li> </ul> <ul id="copyright-links"> <li>© 2012 Guardian News and Media Limited or its affiliated companies. All rights reserved.</li> </ul> </div> </div> <script type="text/javascript" src="http://web.archive.org/web/20120226063915js_/http://resource.guim.co.uk/global/survey/foresee/foresee-trigger.js"></script> </div> <script id="omnitureGeneratorScript" type="text/javascript"> //<![CDATA[ if(true) { var s_account="guardiangu-science,guardiangu-network"; writeScript('http://web.archive.org/web/20120226063915/http://static.guim.co.uk/static/5e8a33fc00d9d9e6d2e5ca71dd905bae18283811/common/scripts/omniture-H.22.4.js', false, function(){}); } //]]> </script> <script type="text/javascript"> window.optimizely = window.optimizely || []; window.optimizely.push("sc_activate"); </script> <script id="omnitureScript" type="text/javascript"> //<![CDATA[ if(true) { if (false) { s.pageName = document.title; } else { s.pageName="AAAS:Keyword Page:600618"; } s.channel = "Science"; s.pageType=""; s.server='59'; s.prop2='GUID:(none)'; s['prop3']="GU.co.uk"; s['prop4']="AAAS (Science)"; s['prop5']="Not commercially useful"; s['prop6']=""; s['prop7']="12-Feb-17"; s['prop8']="600618"; s['prop9']="Keyword Page"; s['prop10']=""; s['prop11']="Science"; s['prop13']=""; s['prop25']=""; s['prop30']="non-content"; s.prop47="UK"; s.hier2="GU/Science/AAAS"; s.events=""; s.eVar23=""; try { if (guardian.r2.OmnitureTrackingOverride) { new guardian.r2.OmnitureTrackingOverride(s); } } catch(err) { } if(jQ.cookie("GU_OMNITURE") !== null) { s.events = jQ.cookie("GU_OMNITURE"); jQ.cookie("GU_OMNITURE", null, { path: '/', domain: '.guardian.co.uk'}); } var s_code=s.t();if(s_code)document.write(s_code); } //]]> </script> <noscript id="omnitureNoScript"> <div><img alt="" src="http://web.archive.org/web/20120226063915im_/http://hits.guardian.co.uk/b/ss/guardiangu-science,guardiangu-network/1/H.22.4/95626?ns=guardian&pageName=AAAS%3AKeyword+Page%3A600618&ch=Science&c3=GU.co.uk&c4=AAAS+%28Science%29&c5=Not+commercially+useful&c6=&c7=12-Feb-17&c8=600618&c9=Keyword+Page&c10=&c11=Science&c13=&c25=&c30=non-content&h2=GU%2FScience%2FAAAS&c2=GUID:(none)" width="1" height="1"/></div> </noscript> <script> var _qevents = _qevents || []; (function() { var elem = document.createElement('script'); elem.src = (document.location.protocol == "https:" ? "http://web.archive.org/web/20120226063915/https://secure" : "http://web.archive.org/web/20120226063915/http://edge") + ".quantserve.com/quant.js"; elem.async = true; elem.type = "text/javascript"; var scpt = document.getElementsByTagName('script')[0]; scpt.parentNode.insertBefore(elem, scpt); })(); _qevents.push( { qacct:'p-73ktnlRTKQPTw', labels: 'science'} ); </script> <noscript><div style="display: none;"><img src="//web.archive.org/web/20120226063915im_/http://pixel.quantserve.com/pixel/p-73ktnlRTKQPTw.gif?labels=science" height="1" width="1" alt="Quantcast"/></div></noscript> <script> var qcResults = function (result) { for (var i = 0, len = result.segments.length; i < len; i++) { OAS_query += 'qc=' + result.segments[i].id + '&'; } } </script> <script src="//web.archive.org/web/20120226063915js_/http://pixel.quantserve.com/api/segments.json?a=p-73ktnlRTKQPTw&callback=qcResults"></script> <script id="componentTrackingScript" type="text/javascript"> if (true) { jQ(document).ready(function () { jQ('a[data-cpt]').each( function () { jQ(this).click( function () { var cpId = jQ(this).attr('data-cpt').split("-")[1]; var currentLink = jQ(this).attr('href'); if (currentLink.indexOf('intcmp=') == -1) { if(currentLink.indexOf('?') == -1) { var separator = '?' } else { var separator = '&' } jQ(this).attr('href', currentLink + separator + "intcmp=" + cpId); } }); }); }); } </script> <script type="text/javascript"> //<![CDATA[ if (true) { // guardian.co.uk Connect Adprobe Tag, MPU [9814], Leaderboard [9815] var wlOrd = new Date().getTime(); document.write('<scr' + 'ipt type="text/javascript" src="http://web.archive.org/web/20120226063915/http://req.connect.wunderloop.net/AP/1566/6033/10343/js?cus=10343,10344&ord=' + wlOrd + '"></sc' + 'ript>'); } // ]]> </script> <script type="text/javascript"> //<![CDATA[ if (true) { OAS_query += 'wl10343=' + wl10343camp + '&wl10344=' + wl10344camp + '&'; } // ]]> </script> <script type="text/javascript"> //<![CDATA[ if(true) { ensurePackage("guardian.r2.revsci"); guardian.r2.revsci.cookieDomain = '.guardian.co.uk'; guardian.r2.revsci.gu_geo_country = 'usa'; guardian.r2.revsci.siteName = 'Science'; guardian.r2.revsci.commercialFolder = 'Not+commercially+useful' addEvent(null, 'load', function () { writeScript('http://web.archive.org/web/20120226063915/http://js.revsci.net/gateway/gw.js?csid=E05516', true, function() { writeScript('http://web.archive.org/web/20120226063915/http://static.guim.co.uk/static/5e8a33fc00d9d9e6d2e5ca71dd905bae18283811/common/scripts/revsci.js', true, function() { rs_initTracking(); }) }) }); } // ]]> </script> <noscript> <div><img src="http://web.archive.org/web/20120226063915im_/http://pix01.revsci.net/E05516/a3/0/0/0/0/0/0/0/0/0/noscript.gif" alt=""/></div> </noscript> <script type="text/javascript"> //<![CDATA[ function OAS_NORMAL(pos) { document.write('<A HREF="' + OAS_url + 'click_nx.ads/' + OAS_sitepage + '/1' + OAS_rns + '@' + pos + '!' + pos + '?' + OAS_query + '" TARGET=' + OAS_target + '>'); document.write('<IMG SRC="' + OAS_url + 'adstream_nx.ads/' + OAS_sitepage + '/1' + OAS_rns + '@' + pos + '!' + pos + '?' + OAS_query + '" BORDER=0></A>'); } OAS_version = 11; if ((navigator.userAgent.indexOf('Mozilla/3') != -1) || (navigator.userAgent.indexOf('Mozilla/4.0 WebTV') != -1)) OAS_version = 10; if (true) { if (OAS_version >= 11) document.write('<scr' + 'ipt src="' + OAS_url + 'adstream_mjx.ads/' + OAS_sitepage + '/1' + OAS_rns + '@' + OAS_listpos + '?' + OAS_query + '"><\/script>'); } function OAS_AD(pos) { if (true) { if (typeof(OAS_RICH) !== 'undefined' && OAS_version >= 11) { OAS_RICH(pos); } else { OAS_NORMAL(pos); } } } //]]> </script>  <div id="ad-temp-Top"> <script> //<![CDATA[ jQ('#ad-placeholder-Top').writeCapture().replaceWith('<script>OAS_AD("Top")<' + '/script>'); //]]> </script> </div> <script> jQ('#ad-temp-Top').hide(); </script> <div id="ad-temp-Right1"> <script> //<![CDATA[ jQ('#ad-placeholder-Right1').writeCapture().replaceWith('<script>OAS_AD("Right1")<' + '/script>'); //]]> </script> </div> <script> jQ('#ad-temp-Right1').hide(); </script> <div id="ad-temp-x31"> <script> //<![CDATA[ jQ('#ad-placeholder-x31').writeCapture().replaceWith('<script>OAS_AD("x31")<' + '/script>'); //]]> </script> </div> <script> jQ('#ad-temp-x31').hide(); </script> <script type="text/javascript"> ensurePackage('guardian.r2.omniture'); guardian.r2.omniture.trackComponents = true; </script> <span id="Panel_Content" class="initially-off"></span> <script type="text/javascript"> // <![CDATA[ if(true) { var OAS_taxonomy='&Paneled_Site=guardian.co.uk&Paneled_Section=science'; jQ(document).ready(function(){ jQ.getScript('http://web.archive.org/web/20120226063915/http://static.guim.co.uk/static/5e8a33fc00d9d9e6d2e5ca71dd905bae18283811/common/scripts/kantarmedia.js'); }); } // ]]> </script> <script> if(true) { jQ(function() { if ('undefined' !== typeof MatchingEngine) { MatchingEngine.logEvent('keyword', 'id=http://www.guardian.co.uk/science/aaas'); } }); } </script> <script type="text/javascript"> if (true) { var _sf_async_config = {}; /** CONFIGURATION START **/ _sf_async_config.uid = 30676; _sf_async_config.domain = document.domain; _sf_async_config.sections = 'Science'; _sf_async_config.authors = ''; _sf_async_config.useCanonical = true; /** CONFIGURATION END **/ (function() { function loadChartbeat() { window._sf_endpt = (new Date()).getTime(); var e = document.createElement('script'); e.setAttribute('language', 'javascript'); e.setAttribute('type', 'text/javascript'); e.setAttribute('src', (('https:' == document.location.protocol) ? 'http://web.archive.org/web/20120226063915/https://a248.e.akamai.net/chartbeat.download.akamai.com/102508/' : 'http://web.archive.org/web/20120226063915/http://static.chartbeat.com/') + 'js/chartbeat.js'); document.body.appendChild(e); } var oldonload = window.onload; window.onload = (typeof window.onload != 'function') ? loadChartbeat : function() { oldonload(); loadChartbeat(); }; })(); } </script>   <span id="n-analytics-placeholder"></span> <script type="text/javascript"> if (true) { jQ(document).ready( function(){ var script = "<scr" + "ipt type='text/javascript' src='//web.archive.org/web/20120226063915/http://secure-uk.imrworldwide.com/v60.js'><" + "/script>"; script += "\n<sc" + "ript type='text/javascript'" + ">"; script += "\nvar pvar = { cid: 'uk-305078h', content: '0', server: 'secure-uk' };"; script += "\nvar feat = { landing_page: 0 };"; script += "\nvar trac = nol_t(pvar, feat);"; script += "\ntrac.record().post();"; script += "\n<" + "/script>"; jQ("#n-analytics-placeholder").writeCapture().replaceWith(script); } ); } </script> <noscript> <div> <img src="//web.archive.org/web/20120226063915im_/http://secure-uk.imrworldwide.com/cgi-bin/m?ci=uk-305078h&cg=0&cc=1&ts=noscript" width="1" height="1" alt=""/> </div> </noscript>  </body> </html>

CINXE.COM

AAAS | Science | The Guardian