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200,000 years ago we took our first steps in Africa. Today there are seven billion of us living across the planet. How did our ancestors spread from continent to continent? This is a global detective story, featuring the latest archaeological discoveries and genetic research. On each continent, we track down the earliest members of our species, Homo sapiens. Who were these First Peoples? What drove them to the ends of the earth?

Peaceful, intelligent, friendly beings that swim as if they own the sea, dolphins have long evoked humans affection and fascination, but still little is known about them. Viewers will get a fresh look at the world of the dolphins and meet up with scientists who will provide a better understanding of them. See what happened 50 million years ago when wolf-like mammals evolved into the family of dolphins, porpoises, and killer whales. Contains five episodes....

Witness some of the most celebrated dogfights in modern history as the pilots strap back in and recall their memories of these historic engagements, from Pearl Harbor to Guadalcanal, North Korea to the Solomon Islands, and Vietnam to the Middle East. Mixes archival footage, CGI graphics and narration from the original pilots.

Sinkholes have swallowed highways, apartment buildings, horses, camels, and even golfers with monster-size holes cracking the earth from Siberia to Louisiana. Filled with compelling eyewitness video of dramatic collapses, and following scientists as they explore the underlying forces behind these natural disasters, Nova travels the globe to investigate what it's like to have your world vanish beneath your feet.

With the brutal extremes of winter looming, naturalist Casey Anderson says good-bye to his grizzly bear companion Brutus, and treks deep into Yellowstone's backcountry to experience the park like most visitors never will.--From case.

A purported 1,000 pound feral hog is killed and National Geographic goes on a forensic investigation into this mysterious creature.

Known varyingly as a sorceress, an enchantress, and a devil's consort, the witch has haunted the human consciouness and captured the imagination for thousands of years.

Raw and SmackDown Live's final stops before WrestleMania are filled with twists and turns. At Elimination Chamber, six Superstars enter the gargantuan steel prison with only one person leaving with their hand raised. At WWE Fastlane, the fate of WrestleMania can change in an instant with the Superstars of SmackDown Live competing for that opportunity to enter The Grandest Stage of Them All with some major momentum. This double feature collection is...

Some think of Dean Potter as a real-life superhero. He can climb the unclimbable, visualize the invisible and fly through the air with the greatest of speed. As perhaps one of the worlds best BASE jumpers, Dean holds several records for height, distance and flight duration. Now, Dean has set his sights on Mount Bute a 9,000-foot granite launch pad along the British Columbia coastline.

American Military's most advanced weapon - the Nuclear Powered Aircraft Carrier - is about to take on the 21st Century with the most significant technological change in over 50 years. Watch an exclusive, behind the scenes journey of the development and testing of EMALS, the electro magnetic aircraft launch system that will be state of the art on the US Navy's new class of Aircraft Carriers. -- Container