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New Evidence Shows Giant Meteorites Created the Seven Continents Upon Impact With Earth

New research suggests the seven continents were created by giant meteorite impacts—similar to the one that wiped out the dinosaurs. They happened more than three-and-a-half billion years ago, before life on Earth began— so the discovery sheds fresh light on evolution. Scientists analyzed a mineral called zircon, the microscopic grains of which act like a ‘geological […]