Summary: <p>Forests cover more than 30 percent of the world's land surface. They are home to a variety of living organisms, but much of what happens in the woods is a mystery to humans. Inspired by the mandalas of Tibetan monks, biologist David Haskell set out to better understand forest ecology: he visited the same spot in the Tennessee forest every day for a year. His days were spent quietly listening and observing. What he found was a thriving biological world of plants, animals and insects, all bound together by a shared ecosystem. On this month's Environmental Outlook: "The Forest Unseen."</p>
