Jeremy Wade examines and explores some of the planet's largest waterways to understand how exploitation and pollution are contributing to the destruction of rivers that were once the lifeblood of communities.
India's mighty Ganges, a river revered by a billion Hindus as a living goddess, is in trouble. Jeremy Wade is on a 1,500-mile mission to investigate the problems first hand and discover what is being done to save this holy river.
China's Yangtze River is threatened by over-fishing, industrial pollution and the loss of iconic monster fish. Jeremy Wade journeys upstream to find out if there are any fish left, and meets the heroes fighting for the future of the river.