Dinosaur Extinction Due to Multiple Causes, Study Suggests

Grow­ing ev­i­dence, pa­le­on­tol­o­gists say, shows that the di­no­saurs and their con­tem­po­rar­ies were not wiped out by one me­te­or im­pact, as is com­mon­ly as­sumed.Rather, mul­ti­ple im­pacts, mas­sive vol­can­ism in In­dia and cli­mate changes con­s­pired to fin­ish off the great rep­tiles, ac­cor­d­ing to Ger­ta Kel­ler of Prince­ton Uni­ver­si­ty in Prince­ton, N.J., and col­leagues..........

World Science