Did you know that BILLIONS of trees have died in recent years? Beetle attacks, asian fungus and drought are taking out North America's ancient alpine bristlecones, Texan shade trees and parts of the Amazon. Any reader of this site knows that trees planted in the right places help fight climate change. But they help make our planet liveable in a number of other ways too, from fertilising plankton to providing the basis for medicines. Learn more . . . .