Impossible Engineering

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.

To carry infantry troops to the frontlines, military engineers designed three battlefield behemoths that command the land, sea, and air; special access reveals how cutting-edge tech made these innovations for the U.S. Air Force, Army, and Marines possible.

A cutting-edge engineering marvel can lift boats and water to astonishing heights, and its advanced design makes it the first and only construction of its kind; behind-the-scenes access shows how it works.