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Bubbling Hot Crater Could Have Sheltered Life After Dino Doomsday

On one particularly hideous day 66 million years ago, Earth burned. A city-sized asteroid struck off the coast of Mexico’s Yucatan Peninsula and pushed the planetary reset button, wiping out species from plankton to plesiosaurs. Some 75 percent of all life — including every land animal larger than 55 pounds — went extinct. The calamity changed the course of evolution.
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