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

The National Geographic Alaskan adventure competition series returns for a second season with some of the toughest men and women on earth competing for one prize, survival. To be named Alaska's Ultimate Survivors the teams must test their skills in the depths of some of the world's most unforgiving land, the Alaskan wilderness.

From its hot molten core to the mega sized waves battering its coast, Hawaii is an untamed and very wild bit of paradise that continues to transform itself and challenge expectations.

Catastrophic tornadoes, historic floods, destructive fires, violent earthquakes: through eyewitness video, historical archives, and cutting edge CGI, National Geographic provides a comprehensive, yet intimate look at the most significant natural disasters of all time. A team of world experts reveal the pivotal moments that turned the top ten from natural phenomenon into human catastrophe and explain why these disasters became genuine game-changers....

"It's the most famous military installation in the world, yet it doesn't officially exist. Area 51--a site for covert Cold War operations--has long been a magnet for crackpots, conspiracy theorists, and the overly curious. While there may not be truth to the rumors that Area 51 is a haven for UFOs and extraterrestrials, it's clear that our government has been up to something in Area 51 for decades, and it turns out there is a kernal of truth to even...

World's biggest cave: More than three times the height of Niagara Falls, much of Vietnam's Mountain River Cave has remained untouched by humans. With exclusive footage, National Geographic reveals for the first time in history astounding evidence that this could be the largest cave in the world; Secret lives: Living two lives can be seen as deceitful, bizarre and taboo. We'll meet a woman who lives part-time in a wheelchair pretending to be a paraplegic...

From award-winning filmmakers Beverly and Dereck Joubert, comes the remarkable story of the black rhino and those who are fighting to save the last of these amazing creatures.

"Earth is an incredible, exceptional planet with an amazing life story full of cataclysmic disasters, eleventh-hour coincidences that save it from extinction, and an astonishing power to continually regenerate. This landmark series uses breathtaking footage and specialist imaging to tell the story of the great forces that shape the planet - volcanoes, the ocean, the atmosphere and ice. Traveling from Ethiopia's unique lava lake to an ice cave under...

Documents the most significant events of the Mars rovers Spirit and Opportunity.

America's Great Plains wee once a vibrant grassland ecosystem, akin to the great savannahs of Africa. Here, a mere 200 years ago, Lewis and Clark stepped onto this fertile landscape and were awestruck by what they saw -- herds of bison, packs of wolves, grizzly bears, prairie dogs and more. Since Lewis and Clark's time, many of these iconic prairie creatures have all but disappeared. Now, one of the most ambitious conservation projects in American...

In this 3 hour series, one can witness in seconds what took the Earth eons to create: bumper-car continents; ice ages pulsing out of the poles and back; the Himalayas surging upwards; sand dunes swallowing, then uncovering African villages, and more!