A basic tenet underpinning scientists' understanding of extinction is that more abundant species persist longer than their less abundant counterparts, but a new University of Georgia study reveals a much more complex relationship.

The second-largest mass extinction in Earth's history coincided with a short but intense ice age during which enormous glaciers grew and sea levels dropped.

Following one of Earth's five greatest mass extinctions, tiny marine organisms called graptoloids did not begin to rapidly develop new physical traits until about 2 million years after competing species became extinct.

Based on the results of a set of novel new experiments, scientists have theorized that the rise of terrestrial plants in Earth’s natural history may have initiated a series of ice ages that researchers have previously been at a loss to explain.

CAMARILLO, CA, Oct. 30, 2011 /PRNewswire/ - BNK Petroleum Inc. (the "Company") (TSX: BKX), on behalf of Saponis Investments Sp.