UH scientists uncover evidence comets helped spark life on Earth
Honolulu Star-Advertiser, March 6, 2013
http://www.staradvertiser.com/news/breaking/195680781.html
A comet strike could mark the end of life on Earth.
Thanks, if it isn’t already, could make a good topic.
sidebar:
http://www.freerepublic.com/focus/chat/2995032/posts?page=21#21