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Extinction: What were conditions like on Earth when the dinosaur-killing asteroid crashed into the planet?
About 66 million years ago, dinosaurs ruled the Earth in a very different environment than we see today, with some creatures demonstrating indomitable power, while others thrived in different ways.
Two scientists have described the bright fireball, crackling noise and sonic boom of the impact 66m years ago ...
"It sounds like science fiction or the stuff of Hollywood movies." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. NEW YORK — The American Museum ...
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