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cheap coach purses canada Earth, considered the biggest cooperative science project in history. When the ISS is complete, over 80 flights will have been made to the station, each adding another important element to the incredible construction feat.More than four times the size of Russia Mir station, the ISS will weigh more than one million pounds, boast almost an acre of solar panels, and be 356 feet across and 290 feet long. Development, assembly and daily running costs are estimated to be more than $130 billion.Trivia: The ISS hosted both the first space tourist Dennis Tito, who paid $20 million for the visit and the first space wedding, between astronaut Yuri Malenchenko and Ekaterina Dmitriev, who was in Texas.Number 1Three Gorges Dam Sandouping, Yichang, ChinaTry to picture a structure one and a half miles wide, 600 feet tall and capable of creating a water reservoir that is 400 miles long. China Three Gorges Dam project is a massive, 16 year undertaking that aims to halt the Yangtze River floods, which have claimed more than a million lives in the past century.Halting the strong waters of the world third longest river is no easy task, which explains the estimated $24.65 billion bill which some say could end up being three times as much and the almost two decade long effort that began in 1993. When completed, the dam 26 generators are expected to create the equivalent power of 18 nuclear power plants. For six months of the year, 10,000 ton ships will be able to sail inland to the city of Chongqing, creating a huge business center in China Sichuan province.pushing the engineering envelopeRecord holders or not, these