Gravity feels like it’s pulling everything toward Earth, but why?
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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.
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They seem like a real thing but scientists have done experiments and found they’re actually a myth.
Artist illustration of an exoplanet.
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Billions of galaxies are in the universe, with billions of stars in every galaxy. Could billions of planets be out there too?
Whether big or small, if you see something that people need, you can start a company.
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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.
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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.
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Astronomers know a lot about what’s in outer space – and think it’s possible it never ends.
A bush viper slithering out of its skin.
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When the snake is ready to shed its skin, it rubs its body along rocks, plants and other rough things to peel the old layer of scales — often in a single, snaky piece.
A behavior from kittenhood persists in many adult cats.
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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?
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Poison can be a deadly defense that helps a mushroom make sure its spores are spread to new places to grow into baby mushrooms.
The Conversation is proud to launch our new Curious Kids picture book, Why Do Tigers Have Whiskers?
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When a big old tree dies or is cut down, even if we plant a new one we might have to wait hundreds of years before it provides a good possum house.
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When the weather outside is very hot, it can make us feel really unhappy. Here’s why.
Scholars can be more reliable than search engines.
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Unlike scholars, Google’s search engine can’t automatically decide which sources are the most important, most accurate or most significant.
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
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.
Although it appears that some dogs can catch COVID, you don’t have to worry!
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A curious kid asks: Can dogs catch COVID-19?
If you hear the sound of a colour or see a colour each time you feel a particular texture on your skin, that could be synaesthesia.
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If you can “hear” colours or “taste” words then your brain is being activated in unusual ways.
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To tell you the truth, nobody really knows. But it’s probably got to do with the fact that signals from your nose and your eyes arrive in the same area of your brain.
The need for shut-eye is universal.
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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.
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Human farts and sneezes can be big — so imagine the size if they came from the world’s biggest animals?
Confederate currency had images of enslaved people, historical figures and mythical deities.
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Confederate paper money was a promise to exchange the bill for gold or silver, but only after the Confederacy won the war.