* Plant a tree. Start a forest. Fight global warming. * Plant a tree for a friend or two. Each friend can inspire the next to plant the next tree of the forest. * It is like sending an e-card. * Plant a tree now. $1/tree. It all starts with you planting a tree for two friends. Each friend can inspire two more friends by planting a tree for them. As each friend inspires the next, the numbers of trees grows. By the 5th set of friends, a forest of 96 trees are planted.