If humans had the same arm proportions as a T. rex, a 6-foot-tall person would have arms about 11 inches long.
Articles on Curious Kids US
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An expert in traumatic brain injuries explains why you need to protect your noggin.
You can feel wet when you can see water and when you can’t see water. You can also feel dry even when there’s a lot of water vapor in the air – like during a fire.
Science itself isn’t ‘truth,’ but it is an activity with the goal of getting closer to the truth.
While direct evidence of multiple universes is hard to come by, indirect evidence raises intriguing possibilities.
When you’re inside a vortex, your body experiences things the news cameras can’t capture.
Plants changed the atmosphere, built soil and created ecosystems that allowed animals like us to thrive. But first they had to make their way from the water to the land.
The answer has to do with the air we breathe and that bright white snowpack, as an atmospheric scientist in Colorado explains.
Nudity can express everything from innocence to sexual desire, from triumph to defeat.
Did you know that your wireless earbuds contain a tiny radio transmitter?
Some people seem to be born to excel at certain activities. But having opportunities to try new things and get better at them can lead to lifelong passions.
Dark matter doesn’t seem to interact with the matter we can see and touch, so scientists look for it in unusual places, like faraway galaxies and underground detectors.
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 are the skeletons of sea creatures – and they’re older than you might think.
A rover recently captured sounds of lightning crackling on Mars, over a decade after scientists uncovered the first evidence for electric discharges on the planet.
Which way is ‘down’ has a different answer depending on where you are on Earth, in the solar system, in our galaxy and beyond.
Sour acidic tastes turn bitter after you brush your teeth with toothpaste.
Normal matter – which makes up everything we see and touch – isn’t the only type of matter present in the universe.
What muscles feet have, how your brain controls them, and how humans evolved all play a part in why people can’t easily move individual toes.
Many different types of stress can trigger a headache. Luckily, there are treatments that can help stop your head from pounding.
Top contributors
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Distinguished Professor Emeritus of Anthropology, Binghamton University, State University of New York
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Assistant Professor of Astronomy and Astrophysics, University of Maryland, Baltimore County
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Professor of Astronomy, UMass Lowell
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Professor of Biology, Clarkson University
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Associate Professor of Veterinary Clinical Sciences, Oklahoma State University
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University Distinguished Professor of Astronomy, University of Arizona
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Doctoral Student in Biomedical Sciences, University of South Carolina
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Lecturer in Geosciences, University of Montana
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Assistant Professor of Gastroenterology and Hepatology, School of Medicine, University of Washington
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Executive Dean of the College of Arts, Sciences & Education and Professor of Biological Sciences, Florida International University
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Assistant Professor of Biological Anthropology, University of Tennessee
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Professor and Chair of History Department, Colorado State University
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Vice President of Academic Affairs and Dean of the College, Grinnell College
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Associate Professor of Physics, University of Richmond
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Associate Professor of Astronomy, Boise State University