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Last updated on April 16, 2014 at 1:21 EDT

Latest David W. Bapst Stories

Explosive Evolution Need Not Follow Mass Extinctions
2012-02-14 04:26:34

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. This discovery, based on new research, challenges the widely held assumption that a period of explosive evolution quickly follows for survivors of mass extinctions. In the absence of competition, the common theory goes, surviving species hurry to adapt, evolving new...