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For all the latest ABC Science content click <a href="/news/science/" style="color:#FFF;text-decoration:underline">here</a>.</h2></div> <div id="header"> <h1><a href="/news/science/"><img src="/science/img/2007/abcScience.png" border="0" align="right" alt="ABC Science" id="mainLogo"></a></h1> <div class="clear"></div> </div> <div id="wrapperSiteNav"> <div id="siteNav"> <h3>Site Navigation</h3> <div class="siteBling"> <ul class="multiMediaLinks"> <li class="multiMedia navVideo"><a href="/news/science/">Video</a></li> <li class="multiMedia navAudio"><a href="/news/science/">Audio</a></li> <li class="multiMedia navPhotos"><a href="/science/photos/">Photos</a></li> </ul> </div> <div class="clear"></div> <div class="siteLinks"> <ul id="topicsLinks"> <li class="navlink "><a name="exploreByTopic" id="exploreByTopic">Explore by topic</a> <ul id="topicsList"> <li class="navTopicAncient"><a href="/news/science/nature/" class="first ancient"><span>Ancient Worlds</span></a></li> <li class="navTopicHuman"><a href="/news/science/humans" class="human"><span>Being Human</span></a></li> <li class="navTopicEnergy"><a href="/news/science/" class="energy"><span>Energy & Transport</span></a></li> <li class="navTopicEnviro"><a href="/news/science/nature/" class="enviro"><span>Environment & Nature</span></a></li> <li class="navTopicHealth"><a href="/news/science/humans/" class="health"><span>Health & Medical</span></a></li> <li class="navTopicTech"><a href="/news/technology/" class="tech"><span>Innovation & Technology</span></a></li> <li class="navTopicSpace last"><a href="/news/science/space" class="space"><span class="last">Space & Astronomy</span></a></li> </ul> </li> </ul> <ul class="genreLinks"> <li class="navlink navNews"><a href="/news/science" class="genreRoot">News in Science</a></li> <li class="navlink navInDepth"><a href="/news/science/" class="genreRoot">In Depth</a></li> <li class="navlink navK2"><a href="/science/drkarl/" class="genreRoot">Dr Karl</a> <ul id="subnavDrkarl"> <li><a href="/science/drkarl/greatmomentsinscience/"><span>Great Moments in Science</span></a></li> <li><a href="/science/drkarl/scienceontriplej"><span class="radio">Dr Karl on triplej</span></a></li> <li><a href="/science/drkarl/trek/"><span>Karl Trek</span></a></li> <li><a href="/tv/sleekgeeks/"><span>Sleek Geeks</span></a></li> <li><a href="/science/sleekgeeks/eureka/"><span>School's video prize</span></a></li> <li class="last"><a href="https://www.abc.net.au/news/karl-kruszelnicki/8462002"><span>Karl Who?</span></a></li> </ul> </li> <li class="navlink navQandA"><a href="/news/science/" class="genreRoot">Ask an Expert</a></li> <li class="navlink navBasics"><a href="/news/science/" class="genreRoot">Bernie's Basics</a></li> <li class="navlink navGames"><a href="/news/science/" class="genreRoot">Quizzes & Games</a> </li> <li class="navlink navTeachers"><a href="/science/surfingscientist/" class="genreRoot">Teaching Science</a> <ul id="subnavLearn"> <li><a href="/science/surfingscientist/lessonplans/"><span>Lesson Plans</span></a></li> <li><a href="/science/surfingscientist/conundrums/"><span>Conundrums</span></a></li> <li><a href="/science/surfingscientist/demonstrations/"><span>Demonstrations</span></a></li> <li class="last"><a href="/science/careers/"><span><strong>Careers</strong></span></a></li> <li><a href="/science/careers/acedayjobs/"><span>Ace Day Jobs</span></a></li> <li><a href="/science/careers/talkingscience/"><span>Talking Science</span></a></li> <li class="last"><a href="/science/careers/catapult/"><span>Catapult on triplej</span></a></li> </ul> </li> </ul> <div class="clear"></div> </div> <div class="clear"></div> </div> </div> </div>  <div id="wrapperContent"> <div id="content"><a name="mainContent"></a> <div id="contentInner"> <div id="story" class="index"> <p id="hotTags"><span id="tagLine">Hot tags </span><span id="hotTagsLinks"><a href="/science/tag/browse.htm?topic=latest&tag=weather">Weather </a> <a href="/science/tag/browse.htm?topic=latest&tag=climate-change">Climate Change </a> <a href="/science/tag/browse.htm?topic=latest&tag=planets-and-asteroids">Planets and Asteroids </a> <a href="/science/tag/browse.htm?topic=latest&tag=archaeology">Archaeology </a> <a href="/science/tag/browse.htm?topic=latest&tag=fossils" class="last">Fossils </a> </span></p><div class="clear"></div> <h1 class="genreHeading"><span>Science subject and location tags</span></h1> <p class="noIndent"><strong>This tag library is an archive and is no longer updated. For current content go to <a href="https://www.abc.net.au/news/science/">ABC News</a>.</strong></p> <h2 class="sectionHeading"><span class="txupdate"><a href="https://www.abc.net.au/science/tag/greatmomentsinscience/rss.xml" title="https://www.abc.net.au/science/tag/greatmomentsinscience/rss.xml" class="rss">RSS<span> | </span></a><a href="/science/maps/map.htm?site=science&topic=latest&tag=greatmomentsinscience" class="map">Map</a></span>Dr Karl's Great Moments In Science</h2> <div id="pageNavTop"><div class="pagenav"><p> 1 <a href="?site=science&topic=latest&tag=greatmomentsinscience&page=02">2</a> <a href="?site=science&topic=latest&tag=greatmomentsinscience&page=03">3</a> <span class="pageNavNext" title="Next page"> <a href="?site=science&topic=latest&tag=greatmomentsinscience&page=02">Next</a> </span> </p></div> </div> <h4 class="item001"><a href="https://www.abc.net.au/news/science/2017-07-04/dr-karl-did-life-begin-on-underwater-mountain-range/8658542"><img src="https://www.abc.net.au/reslib/201706/r1715986_26737649.jpg" align="left" alt="">Dr Karl: Did life begin on an invisible mountain range?</a></h4> <p class="item001 itemList"><span class="txdate">Wednesday, 28 June 2017</span><span class="description"><br><span class="slug">Great Moments in Science</span> Could life have evolved on the longest mountain range on Earth, that is so far under the water it's invisible to most of us? Dr Karl goes in search for the origins of life.</span><span class="tags"><br> <strong>Subjects: </strong><a href="/science/tag/browse.htm?tag=oceans-and-reefs">oceans-and-reefs</a>, <a href="/science/tag/browse.htm?tag=earth-sciences">earth-sciences</a>, <a href="/science/tag/browse.htm?tag=geology">geology</a>, <a href="/science/tag/browse.htm?tag=greatmomentsinscience">greatmomentsinscience</a>, <a href="/science/tag/browse.htm?tag=drkarl">drkarl</a>, <a href="/science/tag/browse.htm?tag=podcast">podcast</a> </span></p> <h4 class="item002"><a href="https://www.abc.net.au/news/science/2017-05-12/dr-karl-poo-feces-mammal-12-seconds-science/8496988"><img src="https://www.abc.net.au/reslib/201705/r1698857_26377395.jpg" align="left" alt="">Sorry, not all animals take 12 seconds to poo</a></h4> <p class="item002 itemList"><span class="txdate">Friday, 12 May 2017</span><span class="description"><br><span class="slug">Great Moments in Science</span> Headlines don't get much punchier than the recent, "All mammals poop in 12 seconds ...". Dr Karl goes behind the clickbait to reveal the truth.</span><span class="tags"><br> <strong>Subjects: </strong><a href="/science/tag/browse.htm?tag=animals">animals</a>, <a href="/science/tag/browse.htm?tag=mammals">mammals</a>, <a href="/science/tag/browse.htm?tag=greatmomentsinscience">greatmomentsinscience</a>, <a href="/science/tag/browse.htm?tag=drkarl">drkarl</a>, <a href="/science/tag/browse.htm?tag=podcasts">podcasts</a> </span></p> <h4 class="item003"><a href="https://www.abc.net.au/news/science/2017-04-26/dr-karl-the-real-cost-of-air-pollution/8472666"><img src="https://www.abc.net.au/reslib/201704/r1692677_26250154.jpg" align="left" alt="">The real costs of air pollution</a></h4> <p class="item003 itemList"><span class="txdate">Wednesday, 26 April 2017</span><span class="description"><br><span class="slug">Great Moments in Science</span> Air pollution doesn't just look and smell bad, it kills. And it costs megabucks. Dr Karl unpacks the impact of the great VW emissions scam, and more.</span><span class="tags"><br> <strong>Subjects: </strong><a href="/science/tag/browse.htm?tag=air-pollution">air-pollution</a>, <a href="/science/tag/browse.htm?tag=greatmomentsinscience">greatmomentsinscience</a>, <a href="/science/tag/browse.htm?tag=drkarl">drkarl</a>, <a href="/science/tag/browse.htm?tag=podcast">podcast</a> </span></p> <h4 class="item004"><a href="https://www.abc.net.au/news/science/2017-04-18/dr-karl-why-isnt-cannibalism-more-common/8449450"><img src="https://www.abc.net.au/reslib/201704/r1689804_26191717.jpg" align="left" alt="">Why isn't cannibalism more common?</a></h4> <p class="item004 itemList"><span class="txdate">Tuesday, 18 April 2017</span><span class="description"><br><span class="slug">Great Moments in Science</span> Cannibalistic behaviour has been observed in many animal species - and, for most of history, in humans as well. What changed?</span><span class="tags"><br> <strong>Subjects: </strong><a href="/science/tag/browse.htm?tag=anthropology-and-sociology">anthropology-and-sociology</a>, <a href="/science/tag/browse.htm?tag=greatmomentsinscience">greatmomentsinscience</a>, <a href="/science/tag/browse.htm?tag=drkarl">drkarl</a>, <a href="/science/tag/browse.htm?tag=podcast">podcast</a> </span></p> <h4 class="item005"><a href="https://www.abc.net.au/news/science/2017-04-11/dr-karl-superfetation-can-you-get-pregnant-during-pregnancy/8430238"><img src="https://www.abc.net.au/reslib/201704/r1687793_26150832.jpg" align="left" alt="">Can you get pregnant during a pregnancy?</a></h4> <p class="item005 itemList"><span class="txdate">Tuesday, 11 April 2017</span><span class="description"><br><span class="slug">Great Moments in Science</span> It's a phenomenon known as superfetation, and while it's rare, it can happen, says Dr Karl.</span><span class="tags"><br> <strong>Subjects: </strong><a href="/science/tag/browse.htm?tag=reproduction-and-contraception">reproduction-and-contraception</a>, <a href="/science/tag/browse.htm?tag=pregnancy-and-childbirth">pregnancy-and-childbirth</a>, <a href="/science/tag/browse.htm?tag=greatmomentsinscience">greatmomentsinscience</a>, <a href="/science/tag/browse.htm?tag=drkarl">drkarl</a>, <a href="/science/tag/browse.htm?tag=podcast">podcast</a> </span></p> <h4 class="item006"><a href="https://www.abc.net.au/news/science/2017-04-04/dr-karl-how-do-you-clean-up-60-years-of-space-junk/8411836"><img src="https://www.abc.net.au/reslib/201704/r1685377_26099117.jpg" align="left" alt="">How do you clean up 60 years of space junk?</a></h4> <p class="item006 itemList"><span class="txdate">Wednesday, 5 April 2017</span><span class="description"><br><span class="slug">Great Moments in Science</span> There's 60 years of space junk floating around the earth's orbit crashing into itself. How do you clean it up?</span><span class="tags"><br> <strong>Subjects: </strong><a href="/science/tag/browse.htm?tag=astronomy-space">astronomy-space</a>, <a href="/science/tag/browse.htm?tag=spacecraft">spacecraft</a>, <a href="/science/tag/browse.htm?tag=greatmomentsinscience">greatmomentsinscience</a>, <a href="/science/tag/browse.htm?tag=drkarl">drkarl</a>, <a href="/science/tag/browse.htm?tag=podcast">podcast</a> </span></p> <h4 class="item007"><a href="https://www.abc.net.au/radionational/programs/greatmomentsinscience/how-the-gold-nobel-prize-medals-were-hidden-from-the-nazis/8360522"><img src="https://www.abc.net.au/reslib/201703/r1679523_25974514.jpg" align="left" alt="">How the gold Nobel Prize medals were hidden from the Nazis</a></h4> <p class="item007 itemList"><span class="txdate">Tuesday, 21 March 2017</span><span class="description"><br><span class="slug">Clever chemistry</span> Sending gold out of Hitler's Germany was illegal so how did Nobel prize winners keep their medal's safe?</span><span class="tags"><br> <strong>Subjects: </strong><a href="/science/tag/browse.htm?tag=chemistry">chemistry</a>, <a href="/science/tag/browse.htm?tag=greatmomentsinscience">greatmomentsinscience</a>, <a href="/science/tag/browse.htm?tag=drkarl">drkarl</a> </span></p> <h4 class="item008"><a href="https://www.abc.net.au/radionational/programs/greatmomentsinscience/what-we-know-about-misophonia-the-hatred-of-sounds/8353586"><img src="https://www.abc.net.au/reslib/201703/r1677244_25926856.jpg" align="left" alt="">What we know about misophonia, the 'hatred of sounds'</a></h4> <p class="item008 itemList"><span class="txdate">Wednesday, 15 March 2017</span><span class="description"><br><span class="slug">Great Moments in Science</span> A condition called misophonia-where people adversely react to particular sounds, often with feelings of rage, terror, fear and panic-was first identified 20 years ago, but is only now starting to be better understood, says Dr Karl.</span><span class="tags"><br> <strong>Subjects: </strong><a href="/science/tag/browse.htm?tag=neuroscience">neuroscience</a>, <a href="/science/tag/browse.htm?tag=greatmomentsinscience">greatmomentsinscience</a>, <a href="/science/tag/browse.htm?tag=drkarl">drkarl</a>, <a href="/science/tag/browse.htm?tag=podcast">podcast</a> </span></p> <h4 class="item009"><a href="https://www.abc.net.au/radionational/programs/greatmomentsinscience/paying-service-to-the-human-lip/8321542"><img src="https://www.abc.net.au/reslib/201703/r1674503_25869521.jpg" align="left" alt="">Paying service to the human lip</a></h4> <p class="item009 itemList"><span class="txdate">Tuesday, 7 March 2017</span><span class="description"><br><span class="slug">Great Moments in Science</span> With hundreds of muscles and multiple layers of cells, the human lip serves a much greater role than we give them credit for, says Dr Karl.</span><span class="tags"><br> <strong>Subjects: </strong><a href="/science/tag/browse.htm?tag=anatomy">anatomy</a>, <a href="/science/tag/browse.htm?tag=greatmomentsinscience">greatmomentsinscience</a>, <a href="/science/tag/browse.htm?tag=drkarl">drkarl</a>, <a href="/science/tag/browse.htm?tag=podcast">podcast</a> </span></p> <h4 class="item010"><a href="https://www.abc.net.au/radionational/programs/greatmomentsinscience/freezing-in-office-because-air-conditioning-standards-sexist/8300132"><img src="https://www.abc.net.au/reslib/201702/r1671509_25806631.jpg" align="left" alt="">Freezing in the office? It's because air conditioning standards are sexist</a></h4> <p class="item010 itemList"><span class="txdate">Tuesday, 28 February 2017</span><span class="description"><br><span class="slug">Great Moments in Science</span> For 50 years, air conditioning in commercial buildings has been set using the standards designed for 40-year-old men in business suits. That's left women out in the cold, argues Dr Karl.</span><span class="tags"><br> <strong>Subjects: </strong><a href="/science/tag/browse.htm?tag=occupational-health-and-safety">occupational-health-and-safety</a>, <a href="/science/tag/browse.htm?tag=biology">biology</a>, <a href="/science/tag/browse.htm?tag=greatmomentsinscience">greatmomentsinscience</a>, <a href="/science/tag/browse.htm?tag=drkarl">drkarl</a>, <a href="/science/tag/browse.htm?tag=podcast">podcast</a> </span></p> <h4 class="item011"><a href="https://www.abc.net.au/radionational/programs/greatmomentsinscience/how-humankind-has-changed-our-planet/8273806"><img src="https://www.abc.net.au/reslib/201702/r1668948_25753692.jpg" align="left" alt="">How humankind has changed our planet</a></h4> <p class="item011 itemList"><span class="txdate">Tuesday, 21 February 2017</span><span class="description"><br><span class="slug">Great Moments in Science</span> Many factors have contributed to how Earth has changed over time, but humankind has been a major contributor in a relatively short period of time, writes Dr Karl.</span><span class="tags"><br> <strong>Subjects: </strong><a href="/science/tag/browse.htm?tag=climate-change">climate-change</a>, <a href="/science/tag/browse.htm?tag=planets-and-asteroids">planets-and-asteroids</a>, <a href="/science/tag/browse.htm?tag=earth-sciences">earth-sciences</a>, <a href="/science/tag/browse.htm?tag=greatmomentsinscience">greatmomentsinscience</a>, <a href="/science/tag/browse.htm?tag=drkarl">drkarl</a>, <a href="/science/tag/browse.htm?tag=podcast">podcast</a> </span></p> <h4 class="item012"><a href="https://www.abc.net.au/radionational/programs/greatmomentsinscience/could-we-capture-and-store-energy-from-lightning/8239402"><img src="https://www.abc.net.au/reslib/201702/r1666106_25692557.jpg" align="left" alt="">Could we capture and store energy from lightning?</a></h4> <p class="item012 itemList"><span class="txdate">Tuesday, 14 February 2017</span><span class="description"><br><span class="slug">Great Moments in Science</span> Could lightning power the planet instead of fossil fuels? Dr Karl does the numbers and the answer is surprising.</span><span class="tags"><br> <strong>Subjects: </strong><a href="/science/tag/browse.htm?tag=energy">energy</a>, <a href="/science/tag/browse.htm?tag=physics">physics</a>, <a href="/science/tag/browse.htm?tag=greatmomentsinscience">greatmomentsinscience</a>, <a href="/science/tag/browse.htm?tag=drkarl">drkarl</a>, <a href="/science/tag/browse.htm?tag=podcast">podcast</a> </span></p> <h4 class="item013"><a href="https://www.abc.net.au/radionational/programs/greatmomentsinscience/the-power-of-lightning/8222972"><img src="https://www.abc.net.au/reslib/201702/r1663939_25647360.jpg" align="left" alt="">How lightning happens: a step-by-step guide</a></h4> <p class="item013 itemList"><span class="txdate">Tuesday, 7 February 2017</span><span class="description"><br><span class="slug">Great Moments in Science</span> It takes a unique series of weather factors to create the awesome power of lightning, explains Dr Karl.</span><span class="tags"><br> <strong>Subjects: </strong><a href="/science/tag/browse.htm?tag=physics">physics</a>, <a href="/science/tag/browse.htm?tag=greatmomentsinscience">greatmomentsinscience</a>, <a href="/science/tag/browse.htm?tag=drkarl">drkarl</a>, <a href="/science/tag/browse.htm?tag=podcast">podcast</a> </span></p> <h4 class="item014"><a href="https://www.abc.net.au/radionational/programs/greatmomentsinscience/8208580"><img src="https://www.abc.net.au/reslib/201702/r1661644_25599944.jpg" align="left" alt="">Why we need a leap second added to our clocks</a></h4> <p class="item014 itemList"><span class="txdate">Tuesday, 31 January 2017</span><span class="description"><br><span class="slug">Great Moments in Science</span> As New Year's Eve ticked over to 2017, scientists added an extra second to atomic clocks to compensate for the Earth's variable rotation. Dr Karl explains the pros and cons of doing this.</span><span class="tags"><br> <strong>Subjects: </strong><a href="/science/tag/browse.htm?tag=physics">physics</a>, <a href="/science/tag/browse.htm?tag=greatmomentsinscience">greatmomentsinscience</a>, <a href="/science/tag/browse.htm?tag=drkarl">drkarl</a>, <a href="/science/tag/browse.htm?tag=podcast">podcast</a> </span></p> <h4 class="item015"><a href="https://www.abc.net.au/radionational/programs/greatmomentsinscience/what-would-happen-if-the-earth-stopped-rotating/8180664"><img src="https://www.abc.net.au/reslib/201701/r1656847_25496691.jpg" align="left" alt="">What would happen if the Earth stopped rotating?</a></h4> <p class="item015 itemList"><span class="txdate">Tuesday, 17 January 2017</span><span class="description"><br><span class="slug">Great Moments in Science</span> The good news is that if the Earth's rotation stopped, we wouldn't fall off, but it would be a very inhospitable place, Dr Karl explains.</span><span 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