It is not at all clear that humanity can be saved (or, for that matter, is worth saving). Evolution drives us to breed, drives to procreate, and drives us to accumulate resources. Evolution always pushes us toward the brink, and culture piles on, hurling us into the abyss. Nietzsche was correct about our lack of free will -- as Gray points out in Straw Dogs -- free will is an illusion. It's not merely the foam on the beer: it's the last bubble of foam, the one that just popped. It's no surprise, then, that we are sleepwalking into the future, or that the future is a lethal cliff.