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Changes In Temperature

In 1975 ornithologist George Divoky began his study of black guillemots on Cooper Island, on the Alaskan shore of the Arctic Ocean. Back then ice used to be onshore for much of the summer, he says. But in the past decade, ice has disappeared to as far as 500 miles offshore. http://goo.gl/0zrJFD #FullPodcastAvailable #Podcasts

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