Articles on Curious Kids

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Even when we are asleep, we can still feel if we are comfortable and our ‘sixth sense’ is working to let us know where we are in our beds. www.shuttershock.com

Curious Kids: why don’t people fall out of bed when they are sleeping?

Our body knows how it is moving and where it is because of a sense called proprioception, a 'sixth sense' that helps your body know where it is in the world. And it works even while you're asleep.
If you have been drinking more water than your body needs, the body tells the kidney filters to get rid of the spare water. That’s when your urine will look paler. Shutterstock

Curious Kids: why is urine yellow?

One of the waste products that your kidneys put into your urine is a chemical called urobilin, and it is yellow.
The air up high is just really bad at ‘holding’ onto the radiation coming from the Sun, and the warmth passes straight through it on its journey toward the ground. Kevin Spencer/flicr

Curious Kids: why is air colder the higher up you go?

It helps if you imagine the ground here on Earth as a big heater. It keeps us warm, and if you move away from the heater you feel cold.
Another reason you don’t want to get too close to a black hole is because of something we call ‘spaghettification’. If this happened to Earth it would be… unpleasant. Shutterstock

Curious Kids: can Earth be affected by a black hole in the future?

If you got too close to a black hole, it would suck you in and you'd never be able to escape, even if you were travelling at the speed of light. This point of no return is called the event horizon.
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

Curious Kids: What in the world is a slime eel?

Hagfish have been called the most disgusting creatures in the ocean. But what are they?
When it was young, the Sun spun fast – very fast. It would do one rotation in a just one or two Earth days. www.pixabay.com

Curious Kids: does the Sun spin as well as the planets?

Yes, the Sun absolutely spins. In fact, everything in the universe spins. Some things spin faster than the Sun, some are slower and some things spin 'backwards'.
A male Olive-backed Euphonia (Euphonia gouldi), photographed in Costa Rica. Andy Morffew

Curious Kids: 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 do live outside Earth – on the International Space Station! But humans have had to find a way to make the conditions there more like what we’re used to at home. Flickr/NASA's Marshall Space Flight Center

Curious Kids: can people live in space?

The short answer is yes, but it’s really, really difficult.

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