DRIZZLING dregs of rain, straggling birds nestle on dry banks, and the remaining humans are oppressed by the ever-heating earth. A vision indeed depressing, frightening. But these visions can also obscure illusions: life is not in fact as George W. Bush imagines. With huge war machines out to destroy, with carbon dioxide emissions gushing continuously from millions of exhaust pipes, the world is not always as cheerful, friendly and peaceful as a