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Articles on Curious Kids US

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The planet and the way we live on it are constantly changing. Buena Vista Images via Getty Images

What will the Earth be like in 500 years?

The Earth is constantly changing in natural ways, but most of those changes are very slow. Humans are speeding up other changes with global warming.
Gravity feels like it’s pulling everything toward Earth, but why? AdventurePhoto/E+ via WikimediaCommons

Why does gravity pull us down and not up?

Gravity is something every person on Earth intuitively understands: It is what keeps you on the ground. But how come gravity pulls down, rather than pushes up? Einstein came up with the answer.
Whether big or small, if you see something that people need, you can start a company. Tony Anderson/Stone via Getty Images

How do you start your own company?

There are five basic things to address while starting your own company: Need, idea, product, setup and market.
Sneezing with your eyes closed is a reflex you can consciously override. Robert Kneschke/EyeEm via Getty Images

A pediatric nurse explains the science of sneezing

People sneeze for many reasons and in many ways. One of them is to protect your airways from irritants and infectious disease.
It can stretch your mind to ponder what’s really out there. Stijn Dijkstra/EyeEm via Getty Images

Does outer space end – or go on forever?

Astronomers know a lot about what’s in outer space – and think it’s possible it never ends.
A behavior from kittenhood persists in many adult cats. Byron Chin/flickr

Why do cats knead with their paws?

According to a veterinarian, the behavior some people call ‘kneading the dough’ or ‘making biscuits’ is a clue your cat feels comfortable around you.
Poisonous or edible? Ekaterina Morozova/iStock via Getty Images Plus

Why are some mushrooms poisonous?

Poison can be a deadly defense that helps a mushroom make sure its spores are spread to new places to grow into baby mushrooms.
Fire a set of high-power lasers at a tiny speck of hydrogen isotopes and you can initiate nuclear fusion, the process that powers the Sun. National Ignition Facility

How much energy can people create at one time without losing control?

Scientists are working on ways to make lots of energy by converting matter into energy. The trick is keeping the process under control. One possibility is nuclear fusion – the Sun’s power source.
The need for shut-eye is universal. Justin Lewis/Stone via Getty Images

How much sleep do you really need?

Getting a good night’s sleep on a regular basis can help you do well in school or at work. It might even make you better-looking.
Franklin Delano Roosevelt, standing at center and facing left just above the eagle, takes the presidential oath of office for the third time in 1941. FDR Presidential Library and Museum via Flickr

Has any US president ever served more than eight years?

Only one president has done so – Franklin Delano Roosevelt – but others considered it, and even tried.
There are so many different states – and provinces, districts, regions and lander! Getty Images

How many states and provinces are in the world?

The U.S. is broken up into 50 states, plus territories like Puerto Rico and Guam, and a federal district, Washington, D.C. Most other countries have smaller parts too.
This skull, found in France, was among the first fossils to be recognized as belonging to our own species. DEA /G. Cigolini via Getty Images

How did humans evolve, and will we evolve more?

Our biggest evolutionary advantages are an ability to walk on two legs and our big brains.
Toilets in space are a bit more complicated than those on Earth. Don DeBold via Wikipedia

How do astronauts go to the bathroom in space?

Going to the bathroom is much more complicated in space without any gravity. To solve this problem of tricky orbital potty breaks, NASA builds special toilets that work without gravity.
In addition to being fun, video games can build real-world skills. Carol Yepes/Moment via Getty images

Is gaming good for kids?

Research shows multiple social and cognitive benefits of playing video games.

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