Forests play an important role in regulating the earth’s climate by filtering heat-trapping carbon dioxide out of the atmosphere. They eliminate so much CO-2 that some governments are counting on better forest management to help slow down climate change that’s been set in motion by the use of carbon based fuels. But, little is known about how specific types of forests, in specific areas, interact with the atmosphere. How much carbon do they absorb and hold? How much carbon is released when they are cut or destroyed by fire? How do the forests themselves respond to changes in the climate? Orlando De Guzman (de- gooz-MAAN) of member station KUOW in Seattle traveled to the old growth forests and research labs of the Pacific Northwest to talk with scientists looking for answers to these crucial questions on the fragile relationship between trees, the atmosphere, and the world’s climate.