How the 726-Foot-Tall Hoover Dam Was Built Ahead of Schedule

The world's biggest dam at the time of its construction, Hoover Dam solved the problem of the overflowing Colorado river with sleek design and brilliant American engineering. (3:32 )

Latest Videos

Preview thumbnail for video'Mary Beard on Pompeii's Showiest Family
Mary Beard on Pompeii's Showiest Family (2:37)
Preview thumbnail for video'Surprise: Gladiators Were Vegetarians
Surprise: Gladiators Were Vegetarians (2:32)
Preview thumbnail for video'Incredible: Five Lions Take Down a Giraffe
Incredible: Five Lions Take Down a Giraffe (2:49)
Preview thumbnail for video'Utah's Otherworldly Landscapes
Utah's Otherworldly Landscapes (2:20)
Preview thumbnail for video'Secret Refuge of the Swamp Fox
Secret Refuge of the Swamp Fox (1:48)
Preview thumbnail for video'John Muir's Transformative Climb Up Mt. Rainier
John Muir's Transformative Climb Up Mt. Rainier (1:47)
Preview thumbnail for video'A Secret Refuge for Elk Thought to Be Extinct
A Secret Refuge for Elk Thought to Be Extinct (2:11)
Preview thumbnail for video'Which National Park Draws 25 Million Visitors a Year?
Which National Park Draws 25 Million Visitors a Year? (3:32)
Preview thumbnail for video'The Double Eagle Investigation
The Double Eagle Investigation (3:00)