Peter Ward: Earth’s mass extinctions

Posted by Greg Laden on February 8, 2009
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Comments

  1. #1 Hank Roberts
    February 8, 2009

    Finally! That’s the one from February 2008, much requested.
    Why did it take a full year to make this one available??

  2. #2 The Science Pundit
    February 8, 2009

    I remember reading about this in Scientific American.

  4. #4 freelunch
    February 9, 2009

    Do they have one of Randall’s self-reported obsessiveness?