Scientists analyzing tree ring data to measure the growth of white spruce trees in the Arctic report that their findings contradict the widely held scientific belief that a warmer Arctic climate should spur rapid plant growth. The data suggests that upland white spruce trees aren't benefiting from a warmer climate. This radio broadcast from 2000 reports on that research and explains how a more arid Alaska is causing the stomates of white spruce trees to open less, and therefore take in less carbon dioxide for photosynthesis. The clip is 4 minutes in length.
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