A quarter of the world’s lowland population depends critically on mountain water resources

Global water consumption has increased almost fourfold in the past 100 years, and many regions can only meet their water demand thanks to essential contributions from mountain regions. By the middle of this century, 1.5 billion people, almost a quarter of the world’s lowland population, will strongly depend on runoff from mountain regions. Only sustainable development can ensure the important function of mountains areas as Earth’s “water towers” in the future.

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