How a mass extinction resulted within the rise of the snakes

Enlarge / In the present day’s various snake populations might hint again to a single ancestral species that survived the dinosaur-killing mass extinction. (credit score: Alan Tunnicliffe Pictures / Getty… Read more

Researchers suggest a supernova triggered the Late Devonian mass extinction

Enlarge / The Cassiopeia A supernova which left this remnant behind occurred about 11,000 mild years away—a lot too far to pose a major menace—and its wavefront doubtless reached Earth… Read more