What Killed the Mammoth


	What Killed the Mammoth
kmcolo
10-19-2007 4:59 PM
719 views
tags:
science friday, podcast, science, extinction, megafauna
kmcolo says:
What led to the late Pleistocene extinction of North American Megafauna? The old theory was hunting by the newly arrived human population. But now...
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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/04a82d23-1fb7-48ce-ba79-e1b5a2a50bf0/5E08FB37-23B0-4E50-9E3B-0EF436F75009/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://www.sciencefriday.com/program/archives/200709284" href="http://www.sciencefriday.com/program/archives/200709284" style="font-size: 11px;">www.sciencefriday.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.sciencefriday.com/program/archives/200709284"><div align="center"><img src="http://content9.clipmarks.com/blog_cache/www.sciencefriday.com/img/857631B0-FAFE-4509-8ED5-84ED22295A08" alt="Array.alttext" /></div></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.sciencefriday.com/program/archives/200709284"><P>One team of scientists thinks it knows what killed the woolly mammoth and other ice-age creatures. In a paper published this week in the Proceedings of the National Academy of Sciences, they say they have evidence that a comet or other low-density space object exploded in the upper atmosphere of the Earth about 13,000 years ago, possibly leading to the extinction of mammoths and the decline of Stone Age people. We'll talk about their findings.  
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