Scientists were optimistic about the prospects for polar bears after a polar-bear jawbone discovered in the Svalbard archipelago was determined to be more than 100,000 years old, meaning that the species has already survived one warm interglacial period. | Harper's Magazine

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Scientists were optimistic about the prospects for polar bears after a polar-bear jawbone discovered in the Svalbard archipelago was determined to be more than 100,000 years old, meaning that the species has already survived one warm interglacial period.

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Scientists were optimistic about the prospects for polar bears after a polar-bear jawbone discovered in the Svalbard archipelago was determined to be more than 100,000 years old, meaning that the species has already survived one warm interglacial period.

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