Articles on Curious Kids US

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Inuit people such as these Greenlanders have evolved to be able to eat fatty foods with a low risk of getting heart disease. Olivier Morin/AFP via Getty Images

If evolution is real, then why isn’t it happening now? An anthropologist explains that humans actually are still evolving

We are indeed still evolving, though it can be hard to tell because it happens over generations and often involves things you can’t see, such as what foods different people are able to digest.
A child may temporarily have baby teeth, adult teeth and gaps all at once. BSIP/Universal Images Group via Getty Images

Why do people have baby teeth and adult teeth?

A pediatric dentist and an anthropologist explain how baby teeth and adult teeth help humans chomp their food over a long lifespan.
The Sun occasionally ejects large amounts of energy and particles that can smash into Earth. NASA/GSFC/SDO via WikimediaCommons

What are solar storms and the solar wind? 3 astrophysicists explain how particles coming from the Sun interact with Earth

Space weather isn’t referring to rain clouds that float through the galaxy. Instead, it’s caused by massive explosions of particles that shoot out from the Sun.
Eureka, what an idea! TU IS/iStock/Getty Images Plus

Who invented the light bulb?

Thomas Edison is just part of the answer, and the light bulb is just part of what he achieved.
The Earth’s rotation makes the stars look like they’re moving. Qu Yubao/Xinhua News Agency via Getty Images

Why can’t we feel the Earth moving?

Would you guess that the Earth is spinning at 1,000 mph around its axis and at the same time hurtling through space on its orbit around the Sun at 67,000 mph? Here’s why you don’t feel all that motion.
Protective paint sprayed onto a steel plate in a factory will have a different recipe than paint used in an art class. gilaxia/E+ via Getty Images

How is paint made?

Different paint recipes work for different uses. Two art conservators explain how analyzing paints from the past can reveal how they were made – and how best to preserve them.
Your small intestine is lined with tiny protrusions called villi that play a big role in digestion. Sebastian Kaulitzki/Science Photo Library via Getty Images

How does your body make poop?

Your food goes on a complex journey as it travels from your mouth to your colon.
Brooke M. Henderson hits a bunker shot during a tournament in Grand Rapids, Mich., on June 12, 2025. Michael Miller/ISI Photos via Getty Images

Why is the object of golf to play as little golf as possible?

Golf is one of a handful of sports that reward low scores, not high ones. That means getting around the course efficiently and not wasting strokes.
One way to remember your dreams better: Write them down the moment you wake up. Andriy Onufriyenko/Moment via Getty Images

Do people dream in color or black and white?

Researchers have found dreams are most likely to occur during the stage of sleep known as rapid eye movement, or REM.
When heart cancer does happen, it can be particularly serious. Olga Pankova/Moment via Getty Images

Why is heart cancer so rare? A biologist explains

Studying why heart cells are less likely to become cancerous can provide clues to improving heart regeneration and treatments for heart disease.
Swashbucklers depicted in movies like ‘Pirates of the Caribbean’ aren’t necessarily true to life. Disney

Who was the first pirate?

The first mention of a pirate by name may be in a Greek book from 2,500 years ago. But sea-raiding has been around since the very first boats traversed the world’s waterways.
At the South Pole, which way is up? Abigail Bishop

Are people at the South Pole upside down?

An astrophysicist who spent time doing research at the South Pole gets to the bottom of how things feel at the ends of the Earth.

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