Bermuda Triangle is home to some of the most fascinating unsolved mysteries on Earth. This remote territory in the Atlantic Ocean has been the subject of notoriety and legend as countless ships, planes and human lives have been lost in its waters.

Conspiracy theories, mysteries, secrets and the forbidden are probed with a fresh set of eyes as "America Declassified" delves into the hidden side of the United States. Investigators including former CIA officer Mike Baker, geoscientist and radiological engineering consultant Ben McGee, and investigative reporter Michele McPhee go on location to examine stories and events using new evidence, unprecedented access and never-before-heard-from witnesses. The hourlong episodes incorporate scientific methods, forensics and state-of-the-art surveillance technology to gain new insight into John F. Kennedy's assassination, the D.B. Cooper hijacking case, most-wanted mobster Whitey Bulger's life on the lam, and a rumored doomsday bunker under a major U.S. airport, among other stories. Locals and eyewitnesses also share their accounts of strange sightings, weird goings-on and unexplained phenomena.

Oscar winners Ron Howard and Brian Grazer put their storytelling acumen to work as executive producers of "Breakthrough," a series of hourlong documentaries highlighting the stories, people, and technology behind the world's most cutting-edge scientific innovations. After considering more than 100 scientific topics for the series, the pair -- helped by National Geographic archives and research, along with the scientific resources of partner GE -- selected biotechnology, neuroscience, anti-aging technology, alternative energy, water conservation, and global pandemics. Each episode is directed by a prominent Hollywood star -- Howard himself helms "The Age of Aging," joining actors Angela Bassett ("Water Apocalypse") and Paul Giamatti ("More Than Human"), directors Peter Berg ("Fighting Pandemics") and Brett Ratner ("Decoding the Brain"), and screenwriter Akiva Goldsman ("Energy From the Edge").

Examining planets, black holes, asteroids, nebulae and other cosmic discoveries using cutting-edge research with photographic images and computer graphics.