Buried "megaripples" — some the size of five-story buildings — are helping scientists piece together the devastation ...

Sun-blocking dust from asteroid impact drove the dinosaur extinction The Chicxulub impact 66 million years ago filled the sky with fine silicate dust, which blocked out sunlight and lingered for ...

The Princeton model shows (at left) that the structure of the Earth's surface at the time of the meteorite impact that caused the Chicxulub crater in Mexico would have placed the Deccan Traps in ...

Seventy-five percent of life on Earth was obliterated after the asteroid impact at Chicxulub, which took place 66 million years ago. Until now, scientists have proposed various theories about the ...