Fifteen thousand years ago, the New World was wild and unfettered by civilization. Forests reached the skies in unbroken ranks facing the glacier onslaught. Bison thundered on the plains, feeding on lush grasses. Ferocious carnivores rivaled the mighty wolf pack, stalking the herds. Flocks of birds blackened the Sun during their migration to the glacier fed lakes. Salmon choked rivers and streams. Wildflowers covered meadows in bright dazzling colors...