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A paleontologist wears a T-shirt showing _Strophodus rebecae_, a shark species with flat teeth that lived millions of years ago. Juan Pablo Pino/AFP via Getty Images

Human fear of sharks has deep roots. Written works and art from the ancient world contain

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A satellite image shows a powerful atmospheric river hitting the Pacific Northwest in December 2023. Darker greens are more water vapor. Lauren Dauphin/NASA Earth Observatory

A series of atmospheric rivers is bringing the threat of heavy downpours, flooding,

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