Articles on Curious Kids

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The Rutherford Atomic Model of a neon atom, showing the atom as similar to a solar system, with electrons orbiting a nucleus. Encyclopaedia Britannica/UIG Via Getty Images

Curious Kids: What is the smallest thing in the universe?

The electron is the tiniest particle. Then there are neutrinos, which are as small but may weigh more.
Could the Earth and everything on it – and even the whole universe – be a simulation running on a giant computer? OsakaWayne Studios/Moment via Getty Images

Is the whole universe just a simulation?

Here’s why some people believe we’re living in a computer simulation of reality – like a giant video game in which we’re all the characters.
Seashells can tell you a lot about the sea creatures that made them. Olga Pankova/Moment via Getty Images

Where do seashells come from?

Seashells are the skeletons of sea creatures – and they’re older than you might think.
Spiral galaxies, like Messier 77 shown here, helped astronomers learn about the existence of dark matter. NASA, ESA & A. van der Hoeven

How are dark matter and antimatter different?

Normal matter – which makes up everything we see and touch – isn’t the only type of matter present in the universe.
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.

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