New Impact crater:extinctions (Introduction)
by David Turell 
, Tuesday, February 19, 2013, 19:32 (4296 days ago) @ David Turell
How to kill off life with meteorite impacts;-http://blogs.scientificamerican.com/history-of-geology/2013/02/17/mass-extinctions-and-meteorite-impacts/?WT_mc_id=SA_DD_20130219
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- New Impact crater -
David Turell,
2013-02-19, 15:08
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- New Impact crater:extinctions -
David Turell,
2013-02-19, 19:32
- A recent extinction event understood - David Turell, 2013-05-22, 15:08
- New Impact crater:extinctions -
David Turell,
2013-02-19, 19:32