Strength...A powerful word, but what does it mean? How is it measured? Why are some things simply stronger than others. How strong is a rope, a tractor, a diamond, a tugboat or even plastic. From Spectra fibre to Lexan learn where, how and why strength matters to us every day.

What does it take to rate as "the world's strongest"? Watch as life-saving boron carbide body armor, strong enough to stop 9mm machine gun bullets at point-blank range, is put to the test. Visit the world of Monster Trucks and watch BigFoot in car-crushing action. For a demonstration of lifting might, head dockside with a super-strong mobile crane capable of hoisting a 100,000-ton mega-yacht and toting it through a boat yard without a scratch. The Super-Shredder is a metal recycling monster that can gobble up 6 junked cars a minute.

Join us for a highly charged hour as we see why Alfred Nobel's invention of dynamite took on earthshattering dimensions as his product blasted out the natural resources that built our modern world.

Explore the world of extreme temperatures. See what happens to Pyroman, a life-size mannequin, as he is exposed to over 3,000 degrees F. Visit Underwriters Laboratories and see how common household appliances can go lethal. Follow geologists as they take lava samples from the Kilauea volcano in Hawaii. Finally, journey into a fusion facility in San Diego, California and watch as scientist's heat plasma to over 200 million degrees F in hopes of someday creating an inexhaustible power source.

Modern Marvels is going big, and counting down. We take the "best of" Modern Marvels and give you the MEGA Top 10 countdown. On this edition: Awe-Inspiring Machines--featuring the top ten mightiest, strangest, and most unique innovations from our archives.

Modern Marvels is going big, and counting down. We take the "best of" Modern Marvels and give you the MEGA Top 10 countdown. On this edition: Amazing Weapons. They're every arsenal's best asset and every enemy's worst nightmare and we're counting them down to the most amazing weapon of all.

It comes in many deadly shapes and sizes, and the transportation of dangerous cargo is one of the most meticulously planned procedures in the shipping world. We hitch a ride on a "dynamite run" from explosives factory to construction site; learn how liquid natural gas is shipped, a fuel that could vaporize entire city blocks if ignited; accompany a Drug Enforcement Administration truck as it transports confiscated illegal drugs to an incinerator site for destruction; fly with Air Net as it moves radioactive pharmaceuticals from factory to hospital; and tag along with two tigers, part of a breeding program for endangered species, as they travel from Texas to Ohio. As each story progresses, we explore the history of the transport of that particular form of Dangerous Cargo.

Discover that the deadliest snakes, sports and weather events are closer and more treacherous than you think. Travel to the slopes of Mt. Rainier, America's most dangerous volcano, and find out why 100,000 people could be in serious trouble. Watch where you step, because the most dangerous snake in the U.S. slithers in great numbers and has a short temper. Learn where the most dangerous weather phenomenon, the tornado, can cause the most damage. We'll look for protection for the most dangerous hits football can muster.