Head Rush: Disappearing Glass
Using a clear container of unused corn oil, Kari demonstrates how the property of refraction can make a glass beaker disappear.
Conspiracy Test: Recalling Abductions with Hypnosis
When a person has been abducted by aliens, some of the memories are suppressed. In these cases, hypnosis can be used to recall the missing pieces. Learn more about their experiences on Discovery Channel's "Conspiracy Test."
Extreme Engineering: Bridge Iron Work
Building a large steel bridge is much like a ballet. It's a dance between man, machine and monster chunks of steel. Watch this delicate balance in "Extreme Engineering" on Discovery Channel.
Mega Machines: ABG Titan Road Paver
This 60,000 pound ABG Titan road paver can spit out a track of tarmac 19 inches thick and 52 feet across in one single pass. Watch how this super paver smoothes an airport runway on TLC's "Mega Machines."
Assignment Discovery: Cell DNA
All forms of life have the same base and biochemistry -- cells. The DNA in a cell varies depending on the species. This clip from "Assingnment Discovery" on Discovery Channel shows the differences.
Assignment Discovery: Issac Newton's Principia
On Discovery Channel's "Assignment Discovery," learn about Sir Issac Newton's book, "Principia," which contains his ideas on how mass interacts with force, inertia and acceleration, and his historic definition of gravity.
Future Weapons: Submarine Weapons
On Discovery Channel's "Future Weapons," the USS Texas submarine is armed with Mark 48 torpedoes and long-range tomahawk missiles. The submarine can hold up to 24 weapons on board.
G Word: Urine as Fertilizer
Learn how to neutralize urine so that it may be used to create fertilizer for house plants. Watch the process on Planet Green's "G Word."
Towing the Space Shuttle
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: Master Welder
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: 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.
What is the future of marijuana in the United States?
By 2011, marijuana had become legal or decriminalized in 15 states. But will it ever become legal? Join Cristen Conger of Stuff Mom Never Told You as she explains the controversy surrounding marijuana, and how this may (or may not) change in the future.
MythBusters: Square Wheels Aftershow
In the Square Wheels Aftershow, Adam and Jamie discuss the worth of square wheels, the difficulty they faced with steering and a square-wheeled motorcycle.
MythBusters: Bird Balance
Kari, Grant and Tory answer fan questions in the aftershow for the Bird Balance and Fireworks Man myths, including their thoughts on destroying a limo and strange bird calls.
MythBusters: Revenge Of The Myths
Adam and Jamie respond to fan questions related to the water heater cannon and excavator myths, including how what they'd do differently and what they will test next.
MythBusters: Ballistics Barrel
In this episode of the Mythbusters Aftershow, Kari, Grant an Tory talk about the Ballistics Barrel myth, reminding fans that failure is always an option.
MythBusters: Serious Steel
The sparks fly -- and the forklifts groan -- as Tory, Kari and Grant connect two cars in preparation for the tandem-driving myth seen in the movie Date Night.