20 Things You Didn't Know About Glaciers

These huge masses of ice flow like rivers, and one once hid a Cold War-era city.

By Jonathon Keats
Nov 4, 2020 9:30 PMNov 4, 2020 9:27 PM
glaciers india shutterstock
In India, human-made ice replaces the glaciers that used to provide villages with water. (Credit: Naveen Macro/Shutterstock)

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This originally appeared in the December issue of Discover magazine. Support our science journalism by becoming a subscriber.


1. We’re living in an ice age. For most of the past 2.5 million years, much of the planet has been glaciated, as Antarctica still is today.

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