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We examine more threats--both natural and manmade--that may endanger civilization; from the far reaches of space to tiny viruses, doomsday sources are many.

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More Doomsday Tech

Celebrate the ingenuity and imagination found in the world around us. 24/7 episodes of Modern Marvels, television's most innovative series.

Doomsday threats range from very real, nuclear arsenals, to controversial, global warming, to futuristic - nanotechnology, cyborgs, and robots.

Doomsday Tech 1

Battered and fried or simply raw--seafood is a popular dish, no matter how you serve it; Americans consume more than 5-billion pounds yearly, an order that takes more than a fishing rod to fill and worries conservationists.

Commercial Fishing

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.

More Dangerous Cargo

Extruders, molds, in-line conveyor belts; are these machines manufacturing adhesives, plastics, or parts for your car? No, they're making treats for your mouth--and you will see them doing their seductively tasty work in this scrumptious episode.

Snackfood Tech

Chicago flood; Alpine tunnel fires; riverboat boiler explosion; building collapse; plane crash.

Engineering Disasters 15

When the men and women aboard a modern submarine hear the command to dive, they can take a measure of comfort in the fact that no US sub has been lost in nearly 40 years, though it's been said that the sea is a more hostile environment than space.

Sub Disasters

A toxic waste dump at Love Canal in Niagara Falls, N.Y.; software flaws render Patriot Missiles inaccurate; the collapse of 7 World Trade Center; the Cocoanut Grove nightclub fire in Boston.

Engineering Disasters 13

In the world of surveillance, Big Brother is not only watching, he's also listening, analyzing, recording, scanning, and tracking every aspect of our lives; with advanced surveillance technology, there's virtually no place to hide.

Surveillance Tech

Denver International Airport baggage disaster; Texas A&M bonfire; M-4 Sherman tank; Milwaukee Water Treatment disaster of 1993; Skyline Plaza collapse.

Engineering Disasters 12

Bridges are the lifeline of Japan; since the 1930s, the island nation has dreamt of linking its many parts as a whole; WWII diverted the resources needed to accomplish this, and only since 1960 has the dream moved again, slowly, toward reality.

The World's Longest Bridge

Gas--it makes a balloon go up, cooks our food, and fills our lungs; this invisible state of matter does far more, and has a very visible impact on the world.

Gas Tech

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An underground subway system transforms the bustling metropolis of Athens, Greece, alleviating chronic traffic problems, meeting the needs of the 2004 Olympics and uncovering thousands of invaluable artifacts.

S10 E23 | Athens Subway