Showing posts with label
mass extinctions
.
Show all posts
Showing posts with label
mass extinctions
.
Show all posts
20 November 2009
Meteor/Meteorite News- YD Mammoth Demise 20NOV09
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from Google News: Dung dating illuminates mammoth mystery Nature.com (subscription) - 12 分前 The disappearance of t...
19 May 2009
Mass Extinctions- Medea Hypothesis 19MAY09
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Peter Ward on mass extinctions http://www.ted.com/index.php/talks/peter_ward_on_mass_extinctions.html http://www.youtube.com/watch?v=3lYN_lX...
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