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.
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.