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Making Waves for Coastal Careers on Olympic Peninsula

The Secret Life Of Trees: Researchers Probe Methane In Washington's Coastal Forest

Courtesy of Nick War/PNNL Trees have a little secret you might not know about. Yes, they produce oxygen. Yes, they take in carbon dioxide, a heat-trapping greenhouse gas. But, they also emit methane. Methane is a greenhouse gas that can be significantly more potent than carbon dioxide. “Just about every tree we measured had elevated amounts of methane in it. And that was consistent across the Northwest with a variety of different species,” says Nick Ward, a scientist with Pacific Northwest National Laboratory. Studying methane Ward has long been interested in methane. After grad school, he was measuring methane coming out of the water in the Florida everglades. He sat down next to a giant cypress tree. Ward had read about methane actually coming out of trees, so he placed his tool over the knee a part of the tree   at the base of the cypress.

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