What Caused Most of Planet's Extinction Events? Leading Expert Says "Global Warming"


	What Caused Most of Planet's Extinction Events? Leading Expert Says "Global Warming"

tabsey

9-13-2009 12:11 PM

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tags:

extinction

tabsey says:

Doesn't really matter in the long run how it has happened, the fact that we are already in a period of mass extinction says enough about the effects.

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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/24228fdb-e49d-4076-b85c-8c0cd7d9b644/1E19AEF0-A840-4A21-80AC-53DD52DBCA2A/" 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.dailygalaxy.com/my_weblog/2009/09/were-planets-extinction-events-caused-by-global-warming-leading-expert-says-yes.html" href="http://www.dailygalaxy.com/my_weblog/2009/09/were-planets-extinction-events-caused-by-global-warming-leading-expert-says-yes.html" style="font-size: 11px;">www.dailygalaxy.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.dailygalaxy.com/my_weblog/2009/09/were-planets-extinction-events-caused-by-global-warming-leading-expert-says-yes.html"><P><A href="http://www.dailygalaxy.com/photos/uncategorized/2007/12/18/global_warming_071009_ms_3_3.jpg"><IMG width="355" height="266" border="0" title="Global_warming_071009_ms_3_3" src="http://www.dailygalaxy.com/my_weblog/images/2007/12/18/global_warming_071009_ms_3_3.jpg" alt="Global_warming_071009_ms_3_3" /></A>“If you look at the fossil record, it is just littered with dead bodies from past catastrophes,”  observes University of Washington paleontologist Peter Ward. Ward says that only one extinction in Earth’s past was caused by an asteroid impact – the event 65 million years ago that ended the age of the dinosaurs. All the rest, he claims, were caused by global warming.</P></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.dailygalaxy.com/my_weblog/2009/09/were-planets-extinction-events-caused-by-global-warming-leading-expert-says-yes.html"><P>Ward's <EM>Under a Green Sky</EM> explores extinctions in Earth’s past and predicts extinctions to come in the future.</P></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.dailygalaxy.com/my_weblog/2009/09/were-planets-extinction-events-caused-by-global-warming-leading-expert-says-yes.html">The significant points Ward stresses are  geologically rapid climate change has been the underlying cause of most great "extinction" events. Those events have been, observed Harvard evolutionary biologist Stephen Gould, major drivers of evolution. Drastic climate change has not always been gradual; there is solid empirical evidence of catastrophic warming events taking place in centuries, perhaps even decades.</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.dailygalaxy.com/my_weblog/2009/09/were-planets-extinction-events-caused-by-global-warming-leading-expert-says-yes.html">The impact of atmospheric warming is most potent in its modification of ocean chemistry</blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/1E19AEF0-A840-4A21-80AC-53DD52DBCA2A/blog/" title="blog or email this clip"><img src="http://content7.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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