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Earth Day

The Essence of Water

52m 00s

Water: a chemical substance unlike any other, able to change its properties quickly and frequently. The water contained in a single raindrop has been around for billions of years: it may have been part of rivers and oceans, expanded in ice reservoirs, evaporated to form clouds, hit the ground as rain or snowflakes, and percolated through thick layers of bedrock. A substance without which life as we know it wouldn’t exist.