Around 66 million years ago, the reign of the dinosaurs came to a fiery end. An asteroid about 7 miles (12 kilometers) wide, ...
Smithsonian Magazine on MSN
The Dinosaurs of North America Were Thriving Up Until an Asteroid Wiped Them Off the Face of the Earth, Scientists Argue
A new study of dinosaur biodiversity challenges the belief that the megafauna were on their way out 66 million years ago ...
A Mount Everest–sized asteroid wiped out the dinosaurs, triggering global wildfires, tsunamis, and a nuclear winter before ...
However, when the asteroid slammed into Earth, it carried with it a payload of the element, which settled over much of the planet in a fine layer. The iridium-rich layer of sediment, which defines the ...
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