Costa Rica’s Cocos Island National Park, nicknamed ‘Shark Island’ has what might be the highest concentration of sharks anywhere… but even here sharks are vulnerable. ➡ Subscribe: http://bit.ly/NatGeoSubscribe About National Geographic: National Geographic is the world’s premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and …

Behind-the-Scenes: Check out Riley and the crew as they take on a big, tough, dam fix — the John Day Dam. World’s Toughest Fixes: Columbia River Dam : http://channel.nationalgeographic.com/series/worlds-toughest-fixes/4216/Overview ➡ Subscribe: http://bit.ly/NatGeoSubscribe About National Geographic: National Geographic is the world’s premium destination for science, exploration, and adventure. Through their world-class …

They may be clumsy in the air, but these tiny arctic birds are like rockets underwater. ➡ Subscribe: http://bit.ly/NatGeoSubscribe About National Geographic: National Geographic is the world’s premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories …

Will the Attorney General defy his President’s wishes and go after the Bush Administration? Watch more at http://www.theyoungturks.com.

New revelations about the information the CIA withheld from Congress. Watch more at http://www.theyoungturks.com.

Watch more at http://www.theyoungturks.com

Watch more at http://www.theyoungturks.com

Watch more at http://www.theyoungturks.com

Watch more at http://www.theyoungturks.com

Watch more at http://www.theyoungturks.com