Hidden in the deserts of the #West is the location of #NorthAmerica's most significant #Railroad achievement. Watch new episodes of #ImpossibleEngineering Wednesdays at 9p ET on Science Channel and on SCIgo. | Science Channel

This is the Pioneering Spirit - it's the largest ship in the world. It weighs 1 million tons and likes to pick up entire oil rigs See how they built it on #ImpossibleEngineering at 9p on Science Channel and SCI Go. | Science Channel

Looking to reduce its dependence on coal, China has built the world's largest hydroelectric dam - the Three Gorges Dam spanning the Yangtze. It holds back a 400 sq. mi reservoir. A new IMPOSSIBLE ENGINEERING starts at 9p | Science Channel

With a 262 ft. wingspan, the Airbus 380 is so large it needs its own hangar for servicing. Impossible Engineering is new at 9p! | Science Channel

Five Impossible Tenochtitlan Engineering Marvels Long before Europe mastered large-scale urban planning, Tenochtitlan stood as one of the most advanced cities on Earth. Built on a lake, this Aztec capital solved problems that modern engineers still struggle with — fresh water, transportation, food production, and flood control — all without metal tools or draft animals. Its “impossible” engineering marvels included floating farms that fed hundreds of thousands, massive stone causeways that could