Friends of Gualala River Protecting the Gualala River watershed and the species living within it
Duration: 6:17
Original Air Date: Friday, Dec 17, 2010
Forest ecologist Steve Sillett is leading a team of scientists as they climb and measure every branch of some of the last and tallest old growth redwoods in California. Their goal is to learn how these ancient giants have historically responded to climatic shifts and to monitor how they are being impacted today by global warming.
