Science/Nature

Dolphins have different 'accents'

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Study: Saturn's rings are dense clumps

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Study: Killer hurricanes thrived in cooler seas

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Scientists report virgin shark birth

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Crews bang pipes hoping to steer whales

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Aquarium tags fish with microchips

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Strong evidence of wet past on Mars

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Group: 1 in 6 European mammals face extinction

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Relatives, astronauts remember Wally Schirra

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Lost whales spooked by traffic

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