I thought it was just a fabrication of some paranoid X-Files episode writer - until I Googled it this morning. The Sixth Extinction, and the five previous versions, are actually recognized and described in science. Here are some links to scan:
National Geographic Magazine (1999)
http://www.nationalgeographic.com/ngm/9902/fngm/index.html
BBC News Article
http://news.bbc.co.uk/1/hi/sci/tech/3667300.stm
Science Daily (2004)
http://www.sciencedaily.com/releases/2004/03/040319075340.htm
Friday, December 28, 2007
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