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Some 20 tons of fossils have spent more than a century in UC Berkeley's bell tower, the Jane K. Sather Campanile. Behind locked doors and in dim and dusty rooms, the prehistoric objects, excavated in the early 1900s, appear forgotten. But these ice age remains from Southern California's Rancho La Brea tar pits are being roused each year by dozens of North American researchers, many of them in search of clues to a present-day crisis - global climate change. [Source: University of California, Berkeley]
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