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Calculation (kal-kyuh-LAY-shun)

Science & Nature

Before calculations were numbers on a screen, they were stones in your hand. A pebble could represen...

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Energy (EN-er-jee)

Science & Nature

Hidden inside the word energy is an ancient idea: being at work. A falling stone has it. Sunlight ca...

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Entropy (EN-truh-pee)

Science & Nature

Build a sandcastle and leave it to the wind and waves. Organize a room and then live in it. Create a...

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Petrichor (PET-ri-kor)

Science & Nature

Humans knew the smell long before we had a word for it. Then, in 1964, two Australian researchers ga...

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Polarity (poh-LAIR-uh-tee)

Science & Nature

A magnet provides one of the clearest pictures of polarity: north and south, two opposing poles belo...

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Sublimation (sub-luh-MAY-shun)

Science & Nature

Sublimation is a word about transformation. Dry ice seems to disappear into vapor without first beco...