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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.

More bite-sized facts

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Water.Day_women with glass of alcohol
Your hangover is literally water debt collection

That headache is your brain shrinking slightly from dehydration, demanding you pay back the water alcohol stole.

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Water.Day_yellow modern house in Enschede Netherlands
Modern homes are dirtier than ever

Urban pollution, microplastics, and device off-gassing mean we're cleaning more intensively than any generation in history.

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Water.Day_man showing tears
Your tears have the same salt level as the ocean

Human tears contain about 0.9% salt - nearly identical to seawater, like your body remembers where life began.