What caused the most severe mass extinction ever? It has been re-confirmed that a meteor crash in Mexico was the cause of the end of the Cretaceous period (better known as the age of the dinosaurs). All past research was re-examined, and new evidence was discovered by 41 researchers from across the globe. They concluded that a large meteor -- the impact site was over 200 kilometers wide -- crashing into earth 65.5 million years ago is the only possible explanation for the mass extinction. For more details on the new findings and fun facts about the meteor, click here!
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