Impacts and Extinctions

[mjmurphy <4mjmu@rogers.com>]

Interesting debate in Astrobiology Magazine , by several varieties of 
scientist, on large rocks and their effect on the history of the planet. 
Apparently, the KT is the only mass extinction that can be placed in 
proximity to an asteroid/comet impact with any degree of certainty.

http://www.astrobio.net/news/article373.html

Cheers,

M.J.Murphy

`The shapes of things are dumb."