5 of the Most Significant Impact Craters in North America

There are approximately 180 known impact craters in the world, and a good third of them – including some of the largest – are located in North America. These massive explosion zones were formed by meteors, asteroids, and comets that slammed into the Earth’s surface with a force many times greater than that of today’s most powerful nuclear bombs. One of those impacts, dating to about 66 million years ago on Mexico’s Yucatán Peninsula, triggered the mass extinction that wiped out the dinosaurs.

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