- Broadcast Schedule When finished, the Three Gorges Dam will produce the energy of 15 nuclear power plants and tame some of the river's deadliest floods. To China's leaders, the dam is the greatest engineering feat since the construction of the Great Wall, but to critics worldwide, it is a social and environmental disaster. As the debate rages on, GREAT WALL ACROSS THE YANGTZE tells a complex ...itvs.org/greatwall