Unchained Reaction: Water Wheelin
Team NAC, consisting of special-effects and prop animation experts, test the water wheel they built for their fire-and-ice-themed chain-reaction machine.
Most Watched in Engineering
Imagine if you could power light bulbs with pencils. In this clip, Dr. Ainissa G. Ramirez, Associate Professor of Mechanical Engineering & Materials Science at Yale, describes graphene, and how it may revolutionize civilization. www.seas.yale.edu
Sons of Guns: Desert AR15 Debut
Before General Darden arrives for the big test, Will lets one of the nuclear facility security contractors try out the Desert AR15 assault rifle on a couple of targets.
American Chopper: Shotgun Willie's Gun
Rich presents a custom-made sawed-off shotgun to a Denver nightclub owner who gets to test fire the weapon by blowing away paint cans.
Sons of Guns: Prepping for Action
Watch how the Sons of Guns production crew must prepare to set up a safe live fire weapon reveal.
Discovery News: The Lorax was Right
Will and champion trick shooter Tom Knapp have a huge blast with a big bore blunderbuss.
The Kestrel plane's unique name derived from the Kestrel bird that attacks creators on the ground and hovers. Take a look at this clip to see why this plane is unique.
American Guns: Top Dollar Hunting Rifles
An accomplished big game hunter shows Rich and Kurt a collection of superb European hunting rifles with the hope of making a sale.
Bering Sea Gold: Honey Hole Hunt
After the Clark's first hot spot is tapped out, Zeke and Emily head out to find a new honey hole.
Bering Sea Gold: Signals Crossed
Wild Ranger greenhorn Jason Walker gets confused about diving signals and pulls Capt. Scott up out of the water when he should be letting him drop to the bottom.
Sons of Guns: Skeet Football Showdown
The Red Jacket crew meets up with New Orleans Saints kicker Garrett Hartley at a football field to see if Vince's aim with a shotgun is better than Garrett's toe on a football.
Material Marvels: Solar Materials
Every hour the sun produces enough energy to power the Earth for a year. Dr. Ainissa G. Ramirez, Associate Professor of Mechanical Engineering & Materials Science at Yale, shows how photovoltaic materials can harvest the sun's energy. www.seas.yale.edu
In Barrow, pilot Luck Hickerson struggles to fit four planes in a hangar designed to only fit three.
Recent Videos in Engineering
How can a Toyota Tundra with a 10,000-pound towing capacity pull a 300,000 pound space shuttle? Scott Benjamin of CarStuff delves into the physics at play during the space shuttle's final journey to the California Science Center in Los Angeles.
Sons of Guns: Jesse James Lets Loose
After Will Hayden receives a surprise visit from Jesse James, he gives him a chance to shoot many guns from the Red Jacket collection in the range.
Sons of Guns: Jesse James Surprise
Just when Will and his team thought it was another day at the shop, they receive a surprise visit from Jesse James.
The Red Jacket crew works on building an aluminum Browning automatic rifle for Jesse James. During the build, Jesse James gives Flem a quick lesson in welding.
Sons of Guns: Custom BAR Build
Will Hayden runs his Red Jacket crew - including Vince - through the plans to customize a BAR for Jesse James.
Sons of Guns: First Submachine Gun
A rare gun collector brings in a German Schmeisser MP 28, a variation of the first infantry submachine introduced at the end of World War I.
Sons of Guns: Jesse Opens Fire
Jesse James takes his new customized Red Jacket-style BAR out for a firepower spin.
Bering Sea Gold: Dredger Funnies
Have some fun with a few of our favorite Bering Sea Gold outtakes.
Bering Sea Gold: Don't Call Me A Thief
Scott Meisterheim gives After The Dredge host Thom Beers his thoughts on the fight with Wild Ranger owner Vern Adkinson.
Bering Sea Gold: What Is Gold?
After The Dredge host Thom Beers brings in UC Santa Barbara scientist Doug Fischer to help explain exactly what gold is and where it originates.
Bering Sea Gold: Zeke Drops A Bombshell
Seemingly out of nowhere, Zeke accuses the Sluicey crew of making back-handed deals.
Bering Sea Gold: Cosmic Gold Origins
Our gold science expert Doug Fischer shares more about where gold came from billions of years ago.