Komatsu
Part of the Series: Raw to Ready

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Compare the three main methods of dealing with the 700,000 tons of solid waste generated every day in the U.S.: landfill, incineration, and recycling. Explore the distinction between recycling, which is practical with many metals, and down-cycling, which is the fate of most plastics.
A Nuclear Submarine
Part of the Series: Voyages of Construction
Fourteen years to design and build and costing around a billion pounds, nuclear submarine the Astute is one of the most technologically advanced and controversial machines in the world. For over a year the BBC filmed its construction inside one of the most secure and secret places in the country.…
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Part of the Series: Constructing Australia
Celebrating the 75th anniversary of the Sydney Harbour Bridge, this is the definitive story of how a giant steel arch resembling a coat hanger became one of world's most recognised structures and an engineering triumph. Massive, majestic and breathtaking, the bridge was the greatest engineering challenge of its day anywhere…
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Seven Wonders of the Industrial World - The Brooklyn Bridge - Episode 2 In the mid 19th century, New York was growing faster than any city in the world. A seemingly impossible scheme was devised to unite Manhattan to Brooklyn, spanning the East River with the longest suspension bridge ever…
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Fossil Fuels: Coal, Oil, and Natural Gas
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Coal, oil, and natural gas power the vast majority of electrical generating plants in use today. Learn how fossil fuels are extracted from the earth and how new technologies such as longwall mining and fracking have revolutionized the industry. Also examine some of the environmental drawbacks of these endeavors.
Hagia Sophia - Istanbul's Mystery
Part of the Series: NOVA
Whether serving as Christian church, Islamic mosque, or secular museum, Hagia Sophia and its soaring dome have inspired reverence and awe. For 800 years, it was the largest enclosed building in the world--the Statue of Liberty can fit beneath its dome with room to spare. How has it survived its…
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Part of the Series: NOVA
The Colosseum is a monument to Roman imperial power and cruelty. Its graceful lines and harmonious proportions concealed a highly efficient design and advanced construction methods that made hundreds of arches out of 100,000 tons of stone. In its elliptical arena, tens of thousands of gladiators, slaves, prisoners and wild…
Traffic Engineering
Episode 31 of Everyday Engineering
Traffic engineers help to ensure the safe and efficient movement of vehicles and pedestrians within a road system. Focus on their approach to intersection design, examining the many factors that go into determining whether you're faced with a traffic signal, an overpass, a flyover ramp, or some other means of…
Highway Engineering
Episode 30 of Everyday Engineering
Step into the work boots of a highway engineer, tasked with designing a freeway across hilly terrain to connect two other highways. Discover that features of a safe road that you take for granted--constant-radius curves, gentle grade, sturdy construction, and a well-drained surface--require detailed planning.
Cellular Phone Technology
Episode 22 of Everyday Engineering
Why is cell phone service sometimes so unpredictable? Get inside the cellular network to learn how clever engineering makes a surprisingly large number of two-way conversations possible over a very narrow broadcast spectrum. Also see how the system leads to dead spots, dropped calls, and other familiar cell phone hassles.
Passive Solar and Net-Zero-Energy Homes
Episode 19 of Everyday Engineering
How much energy can you save with a properly designed house? Would you believe all of it? Trace the trend in passive solar and net-zero-energy homes that are engineered to stay comfortable year-round by exploiting sunlight in winter and shielding against it in summer, with minimal operating costs.