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Big, Bigger, Biggest: Apocalypse Sub
The US Navy's biggest submarine, the USS Pennsylvania, can stay submerged for up to six months. Explore the six subs which inspired its design.
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Big, Bigger, Biggest: Dam
Discover the innovative inventions which inspired China's amazing Three Gorges Dam, a project that will supply electricity to 60 million people.
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Big, Bigger, Biggest: Space Station
One of mankind's greatest engineering achievements, the International Space Station could help humans live on Mars. How did its plans develop?
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Big, Bigger, Biggest: Cruise Ship
Discover how six iconic liners paved the way for the astonishing cruise ship Independence of the Seas, which cost $800 million to construct.
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Big, Bigger, Biggest: Tunnel
A look at the technology that has allowed the world's longest tunnel to be built. The Gotthard Base Tunnel stretches 57km through the Swiss Alps.
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Big, Bigger, Biggest: Telescope
Revealing the technological leaps forward that have enabled the world's largest telescope, which sits on a mountain in Arizona, to be built.
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Big, Bigger, Biggest: Cargo Plane
Standing as tall as a seven-story building, the Antonov 124 is the world's largest cargo plane. Discover the landmark aircraft behind its design.
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Big, Bigger, Biggest: Oil Rig
Revealing the technological leaps forward that have enabled the world's largest oil rig to be built.
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Big, Bigger, Biggest: Dome
A look at the world's largest spanning dome at the Oita Stadium in Japan. The Oita's roof spans a mighty 274 metres and covers 43,000 spectators.
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Big, Bigger, Biggest: Sky Wheel
The Singapore Flyer is the tallest observation wheel on Earth. Rising 165 metres into the sky, it can take 1,260 passengers every hour.