D.C.) National Geographic Channel (Television station : Washington

A celebration of the Hubble Space Telescope's 25 years orbiting the planet. The story of one of the most remarkable advances in modern technology, as told by the people who designed, built, launched, operated and repaired the legendary observatory.

"Join geneticist Spencer Wells and a team from National Geographic's Genographic Project as they trace the human journey through time, from our origins in the heart of Africa to the ends of the world. Cutting edge science, coupled with a cast of New Yorkers -- each with their own unique genetic history -- helps paint a picture of these amazing journeys. The human family tree answers some of humanity's most burning questions -- who we are and where...

Renowned nature photographer Joel Sartore takes us on a journey of the world's rarest and most at-risk mammals, fish, amphibians, birds, reptiles and insects.

Join renowned wildlife filmmakers Dereck and Beverly Joubert as they capture the drama of Africa's largest free-roaming elephant herds on their timeless journey across the bush country of northern Botswana. Two years in the making, this remarkable documentary reveals extraordinary elephant behavior never before filmed. View the rare adoption of an abandoned infant, the organized rescue of a calf in danger of drowning, and the haunting way bull elephants...

Return to the heart of Utah canyon country to visit the largest no-kill animal facility in the U.S. At any given time, the sanctuary hosts hundreds of dogs from around the world and is the last hope for dogs that have no place left to go. Follows the story of the dedicated team of experts that works day to day to give these dogs rehabilitation, redemption and a chance for a loving home.

The first manned mission from Earth to Mars in 2033 attempts to colonize the red planet.

Colombia. Acclaimed anthropologist and explorer Wade Davis makes a remarkable journey into the heart of war-torn Colombia to visit one of the indigenous groups that call themselves the Elder Brothers. These extraordinary people claim to be the last descendants of a once-great civilization, the Tairona, and to speak with their voice. Could they be the last window we have on the great high civilizations of the ancient Americas? -- Amazon. National Geographic...

The natural world is full of amazing stories, but sometimes animals act in ways that seemingly go against all their instincts. From an elephant standing guard over a sick dog, to a giant tortoise adopting a baby hippo, and a lioness that ignores all the laws of nature to look after a baby oryx, this heart-warming series examines the cases of animals that have struck up unusual relationships.

"From the moment of conception, every human embryo embarks on an incredible nine-month journey of development. Now, cutting-edge technology makes it possible for National Geographic Channel's "In the womb" to open a window into the hidden world of the fetus and explore each trimester in amazing new detail. Revolutionary 3-D and 4-D ultrasound imagery sheds light on the delicate, dark world of a fetus as never before and follows a rare fetoscope operation,...

Using humor, everyday examples and computer animation for the more abstract concepts, author and physicist Brian Greene explains complex theories of the universe and the focus of his research, string theory.