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Articles sur Curious Kids US

Affichage de 221 à 223 de 223 articles

Researchers pour a barrel of hagfish into a holding tank aboard a research vessel about 20 miles off the coast of Portsmouth, New Hampshire. AP/Steven Senne

What in the world is a slime eel?

Hagfish have been called the most disgusting creatures in the ocean. But what are they?
A male Olive-backed Euphonia (Euphonia gouldi), photographed in Costa Rica. Andy Morffew

Why do birds sing?

Birds spend a lot of time and energy singing, but they don’t do it the same way in every season of the year. And some can’t sing at all. What’s the purpose of birdsong?
People worked for healthy teeth long before nylon brushes hit the market. Mila Davidovic/Shutterstock.com

How did people clean their teeth in the olden days?

People have probably always wanted clean and healthy teeth. What they historically used to achieve dental hygiene might surprise you.

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