NOVA 50x15 - Ancient Earth: Humans

The story of Earth can only be told because now, 4.5 billionyears into its existence, a technological and self-awareanimal species roams its surface, able to study the veryplanet that gave rise to it. But how exactly did Earth giverise to humans? Through stunningly realistic animation,witness the cataclysmic asteroid strike that wiped out thedinosaurs, the tumultuous changing climates that allowed earlyprimates to spread across the planet, and the geologic eventsthat created the conditions for the evolution of an animal thatwalks upright on two legs. Explore the power and paradox ofhumanity's profound impact on our planet and ponder thequestion of how we may shape its future.