2 million-year-old DNA, the oldest-ever, uncovers Greenland's lost world
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Two million-year-old DNA fragments, found in frozen soil in the northeastern tip of Greenland, are the oldest DNA ever obtained. Researchers said that this region was once a 'forested ecosystem' and was home to poplar trees, reindeer, mastodons, geese, and other species. Mastodons, a now-extinct elephantine mammal, lived in North American forests and their remains have never been found in Greenland before.