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Arctic Ecosystems

NPR News Science Correspondent Richard Harris reports that scientists have been surprised by a rapid change in the Arctic Tundra. When the Arctic air warmed up in the 1980s, this delicate ecosystem started venting large quantities of carbon dioxide gas into the atmosphere, potentially adding to global climate change. But a study in the journal "Nature" finds that arctic plant life has adapted to the changing climate, and is helping soak up some carbon dioxide.

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