Sixty-six million years ago, a single asteroid hit Earth in the Yucatán Peninsula and killed off the dinosaurs. The disaster was local, but its effects were planetary. How can a regional calamity have ...

Every December, Earth plows through a dusty lane of debris in space, and the night becomes illuminated by streaks of meteors.

The asteroid impact that wiped out the dinosaurs left a massive buried crater off the Yucatan coast in Mexico. Known as the ...