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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_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.

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Water.Day_Japanese woman boiling water for tea
The tea ceremony is actually about water

Japanese tea ceremony elevates heating water into a meditation on presence and perfection.

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Water.Day_water droplets on car window
Water can be liquid at -40°C without freezing

"Supercooled" water stays liquid way below freezing until you tap it—then it instantly turns to ice before your eyes.