Talk:Sidney Dillon Ripley

Talk
Didn't Dr. Ripley predict in 1970 that 75-85% of species would be extinct by 1995?12.159.72.39 (talk) 17:32, 28 April 2008 (UTC)

This article was edited as part of the SIA edit-a-thon!
Sarah (talk) 16:30, 26 May 2012 (UTC)