What Really Killed the Dinosaurs?

(Slate::Bad Astronomy) – Phil Plait:

When I was a kid, one of the all-time biggest mysteries in science could be summed up simply: What killed the dinosaurs 65-or-so million years ago? And, along with them, fully 75 percent of all plant and animal species on Earth? …

bad_astronomy/2015/10/12/asteroids_and_volcanoes

Dinosaur killer

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