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Sunday, August 20, 2017
warm climate

Asteroid Impact That Killed The Dinosaurs Also Cooled The Earth

By Deborah Netburn, Los Angeles Times LOS ANGELES — The asteroid that wiped out the dinosaurs also caused a temporary but devastating “impact winter” — darkening the sky, cooling the Earth and inhibiting photosynthesis, new research suggests. Sixty-six million years ago, a 6.2-mile-wide asteroid known as Chicxulub struck the Earth off the Yucatan coast, setting off […]

May 13, 2014