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Why Are Rubber Ducks Yellow?

Real ducks can be brown, white, gray, or black. But picture a rubber duck, and chances are it's yellow, with an orange beak a…

Why Do Walnuts Look Like Tiny Brains?

Crack open a walnut, and there it is: something that looks remarkably like a tiny brain. Two halves, countless wrinkles, all tuck…

Why Do Keys Have Teeth?

The teeth on your house key don't actually grab anything. Instead, they position tiny pins inside the lock so its cylinder ca…

Why Do Geese Fly in a V Formation?

A goose flying behind another goose can benefit from air currents created by the bird ahead. But the best place to catch that ext…

Are Apple Seeds Really Poisonous?

An apple a day keeps the doctor away. But tucked inside this famously healthy fruit is a tiny surprise: seeds containing a compou…

Why Is Football Played on Thanksgiving?

Thanksgiving football didn't begin with the NFL. College teams were playing on the holiday decades before the league existed.…

Who Invented Cotton Candy?

A dentist helping create cotton candy sounds like the beginning of a joke. But in the late 1890s, dentist William Morrison teamed…

Why Do Leaves Change Color?

All summer, green leaves do the hard work of feeding a tree. Come fall, they steal the show. Yellow, orange, and red take cente…

Why Do We Clap to Show Appreciation?

A performance ends, and a few hands begin to clap. Within seconds, the sound fills the room. We know exactly what it means: “Well…

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