Three inmates may have escaped Alcatraz, but it’s never been proven.

New evidence reveals the secrets of a Nazi program to build a nuclear bomb.

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Bees get fearless explorer Coyote Peterson's head buzzing.

Josh sets sail for Florida chasing the long-lost treasure of Jose Gaspar.

A Boomer, a Millennial and a Gen-Xer face three grizzly bears.

Jane hunts caribou in the Arctic Circle ... alone.

Test pilots and engineers embark on the first flight of the largest airplane ever built: the Stratolaunch, a one-of-a-kind aircraft designed to transport rockets, spacecraft and experimental hypersonic planes into the stratosphere.

Engineers in China are constructing the largest and most ambitious water transfer project in human history, defying nature to move vast quantities of water from the south to the dry north in Beijing, all without the use of pumping stations.

Explore three battlefield behemoths that command land, sea and air.

Inside access shows how an engineering marvel lifts boats to new heights.

Discover why the world's strangest disaster zones were built and abandoned.

New discoveries reveal what really happened in a remote Louisiana swamp.

New discoveries reveal what really happened on the shores of Lake Michigan.

New discoveries reveal why an island with a dark past was built.