Guide to the catastrophic aspect of evolution looks at the "Oxygen crisis," the destruction of life on Mars and the dinosaur extinction.

Follow these message threads dedicated to extinction theory, chaos, and evolution. Find conference reports and journal corrections.

"Washington Post" feature covers the current mass extinction of species, the sixth since life began. Includes a collection of related resources.

Details the mass extinctions of the Precambrian, Vendian, Cambrian, Ordovician, Devonian, Permian, End-Cretaceous and Holocene periods.

Check out the factors that lead to the opposite of evolution. View photos of animals and plants that didn't make it .