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'Stunning Slo-Mo Footage of Hummingbirds Hovering in Air
Stunning Slo-Mo Footage of Hummingbirds Hovering in Air (2:24)
Preview thumbnail for video'Why Porsche Is Revisiting the Hybrid Car It Also Invented
Why Porsche Is Revisiting the Hybrid Car It Also Invented (2:05)
Preview thumbnail for video'The Typos on This Dead Sea Scroll Don't Mean It's Fake
The Typos on This Dead Sea Scroll Don't Mean It's Fake (2:26)
Preview thumbnail for video'Why Queen Elizabeth II's Marriage Was Met With Suspicion
Why Queen Elizabeth II's Marriage Was Met With Suspicion (1:57)
Preview thumbnail for video'How Wallis Simpson Infiltrated British Royalty
How Wallis Simpson Infiltrated British Royalty (4:18)
Preview thumbnail for video'The $10 Million Race to Invent Star Trek's Tricorder
The $10 Million Race to Invent Star Trek's Tricorder (4:15)
Preview thumbnail for video'Ask Smithsonian: When Did People Start Keeping Pets?
Ask Smithsonian: When Did People Start Keeping Pets? (1:05)
Preview thumbnail for video'Ask Smithsonian: How Long Can a Person Hold Their Breath?
Ask Smithsonian: How Long Can a Person Hold Their Breath? (1:31)
Preview thumbnail for video'Ask Smithsonian: Can Animals Predict Earthquakes and Other Natural Disasters?
Ask Smithsonian: Can Animals Predict Earthquakes and Other Natural Disasters? (1:27)