Mystery of Easter Island
Examining Easter Island, the remote island.
Nuclear Meltdown Disaster
Nuclear Meltdown Disaster: Preview
Why Planes Vanish
Get the inside story of the search for Flight MH370 and meet those who looked for the lost plane.
Watch as the New Horizons spacecraft captures our first clear view of Pluto’s icy surface.
Chasing Pluto: Preview
The secrets behind the design and construction of the Vikings' Ulfberht sword, which was made between A.D. 800-1000, are revealed by master blacksmith Ric Furrer, who reverse engineers the sturdy weapon in the Season 40 premiere.
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