The Best Episodes of Modern Marvels Season 4

In 1912, a headlight-maker and an auto magnate built the first cross-country road to spur the demand for new cars; 70 years and $125 billion later, the highway system had grown to 42,000 miles. Rare photographs and interviews tell the incredible story of the “paving of America”.

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From Alexander Graham Bell’s crude creation, to today’s high-speed wireless networks, we’ll look into the past, present and future of the telephone. We’ll visit the AT&T archives to see how the very first telephone boxes wired together with telegraph cables have evolved into vast wireless networks. Enter into the inner workings of Los Angeles County’s 911 emergency dispatch center, as well as explore advancements made by Lucent/Bell Labs in phone-embedded GPS technology. With telephone privacy issues making headlines, witness a demonstration of how easy it can be for someone to illegally tap your phone. We’ll also look at a technology developed by NASA-Ames that might one day allow people to converse by merely thinking what they want to say.

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Many rivers quenched the thirst of millions in the American west and around the world. Without these aqueducts, some of the earth’s largest cities would turn into gigantic ghost towns. Their technology has been in use for over two thousand years. But today these engineering marvels cost billions of dollars to build, requiring thousands of men to toil for years on end. Aqueducts have made some men famous and others fabulously wealthy. In Los Angeles one man’s vision took one hundred thousand men to complete and a great city was truly born. In Northern California the most famous conservationist of our time waged the political fight of his life in an attempt to save one of nature’s most spectacular valleys from San Francisco’s demand for more water.

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An exploration of the world’s most popular entertainment, from the boy genius who invented it to the RCA “General” who made it a reality.

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A look at the inventions that have revolutionized society as we know it. They began as behemoths which weighed over 2 tons!

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A look at the history of photography beginning as early as the eleventh century. Includes the advancements by Niepce and Daguerre in the 19th century and William Henry Fox and George Eastman in the 20th century.

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A look at the F117 Stealth Fighter that led the pack for the Allies in Gulf Wars One and Two and virtually decimated Iraqi Air Defense. Find out how the technology allows it to approach its target without being detected by radar. Also, a look at the B2 Stealth Bomber.

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Standing majestically for centuries, the world’s great pyramids have long inspired and mystified scholars. Leading experts and historians explore the engineering genius that created some of the largest structures on the planet. From ancient Egypt to Central America, we visit these technological masterpieces.

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Since the turn of the 20th century, designers have competed to build them faster, taller, and steeper. But as technology pushes the envelope with flips, weightlessness, and more g-force than a jet, how many thrills can the human body take?

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From Stonehenge to the Hubble Telescope, man has always been a species of stargazers. Unforgettable film footage and expert accounts reveal the facts of astronomy’s most mind-boggling discoveries.

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Winding 6,000 kilometers through undulating mountains, it is said to be visible with the naked eye from the moon. But who called for the Great Wall's construction and how was it accomplished? Historians, engineers, and scientists explore one of the wonders of the ancient world.

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