Glaciers Are Melting Fast and Putting Billions at Risk

Glaciers are disappearing at record speed—and it’s putting the food and water supplies of 2 billion people in danger, according to a new report from the United Nations. The World Water Development Report 2025, highlighted by The Guardian’s Fiona Harvey, warns that melting glaciers, driven by the climate crisis, are endangering ecosystems, agriculture, and access to clean water around the globe.

Unesco’s director general, Audrey Azoulay, called the situation dire, stating that “we all depend in some way on mountains and glaciers,” which are now in “imminent peril.” The consequences are already being felt. More than 1 billion people live in mountain regions, and in many developing countries, half of these populations are experiencing food insecurity. As glaciers retreat, water for irrigation, drinking, and sanitation becomes scarcer, especially in areas that rely on snowmelt and mountain runoff.

The Colorado River basin, a vital water source in the U.S., has been in drought since 2000, and shifting precipitation patterns—less snow, more rain—are making it worse. Meanwhile, Eastern Africa has lost 80% of its glaciers, and the tropical Andes have lost nearly half since 1998.

Scientists warn this isn’t just about water. As glaciers melt, they expose dark surfaces that absorb more heat, accelerating warming. They also trigger avalanches and sudden floods, and thawing permafrost releases methane—a potent greenhouse gas.

As Alex Brisbourne from the British Antarctic Survey explains, glaciers are “some of the largest freshwater reservoirs on Earth.” Losing them will have consequences far beyond their mountain homes.

We can’t afford to ignore this. Supporting plant-based agriculture, reducing emissions, and protecting natural ecosystems are steps each of us can take. Every action matters—because Climate change isn’t happening elsewhere. It’s happening here and now.

Video Source: Reuters/Youtube

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