Long ago, the story goes, a great black snake would wind itself around the earth, and the rainbow children would rise up to chase the gloom away: the oily spills, the smokestack smog, the choking grip on our souls. Here the tale splits in two. On one side, the oil leaks and creeps. On the other, a tree stretches toward the sun, growing with every lesson we learn. From our own adventures we grow our tree of knowledge, and we remember that we can rise and triumph.