landscapes

Earth's frozen 'water towers' threatened by warming, population growth, report says

Earth's frozen 'water towers' threatened by warming, population growth, report says

Water frozen at the tops of mountains that helps sustain up to a quarter of the human population is under threat from climate change, population growth and lack of proper management, according to a new international study. The systems store and transport water through glaciers, snow packs, lakes and streams. They supply water to 1.9 billion people on Earth. A group of 32 international scientists — including one Canadian — published a paper in the journal Nature on Monday to highlight the importance and vulnerabilities of what they call Earth's 78 water towers.