The Real Dino Killer: A One–Two Punch
An asteroid impact and volcanoes acting together could have done in the beasts, new rock dates indicate
Stories by Howard Lee
What Really Killed the Dinosaurs?
A project under way off the coast of Mexico may finally resolve a longstanding controversy
Clusters of Epic Volcanic Explosions Drove Earth's Mass Extinctions
Huge regions with epic volcanic explosions are now blamed for four of Earth's “big 5” mass extinctions
