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Water.Day_town with frozen river
Water is the only substance that expands when it freezes

Frozen water expands 9%, cracking pipes and splitting rocks—but it also makes ice float, keeping fish alive.

More bite-sized facts

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Water.Day_image of cells
Your daily water intake feeds 37 trillion cells

Every cell in your body needs water to function, and you're basically a mobile water delivery service.

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Water.Day_trees in Redwood Forest California
Water flows uphill when nobody's watching

In trees, water defies gravity and flows upward through tiny tubes using surface tension and evaporation - no pumps needed.

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Water.Day_woman behind water glass
Water temperature changes taste experience

Water minerals are more detectable at room temperature than when ice-cold, completely changing your tasting experience.