During experiments to find a cure for Alzheimer's disease, a genetically-enhanced chimpanzee uses its greater intelligence to lead other apes to freedom.

What would happen if every human being on Earth disappeared? This isn't the story of how we might vanish, it is the story of what happens to the world we leave behind. Examine how the very landscape of planet Earth would change in our absence. A stun

How did we get here? Using the evidence from genetics, fossils, archaeology and climatology, Dr. Alice Roberts uncovers five epic routes our ancestors took across the globe and the obstacles and brutal challenges they encountered along the way. It reveals how our family tree grew and spread out across the world, producing all the variety we see in the human species today -- but despite all that diversity, Dr. Roberts reveals how astonishingly closely...

Alan Alda takes a look at how humans first appeared on Earth millions of years ago, and how our species not only survived, but thrived, through some unimaginable conditions. Alda visits with dozens of scientists on three continents, and participates directly in many experiments - including the detailed examination of his own brain.

Colin Beavan is a New York City writer and self-proclaimed liberal. He has big plans for his new book. He decides on a grand experiment: to live one year with as little impact on the environment as possible. The problem is, the project requires his w

America's national mammal sustained the lives of Native people for untold generations before being driven to the brink of extinction, eventually prompting an unlikely collection of people to rescue it from disappearing forever.