Black doesn’t appear in the visible spectrum of electromagnetic radiation. So why do we still see it?
Articles on Curious Kids US
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Pain is unpleasant, but it does have a purpose.
The answer has to do with molecules.
A rocket needs to overcome the force of gravity to leave Earth behind.
Wars always include killings and destruction, but there are limits. An expert in international law explains the rules of war laid out in the Geneva Conventions − and why they’re so hard to enforce.
The International Space Station is an engineering feat that has led to countless scientific discoveries. Like the thousands of satellites in orbit, it manages to stay up in the atmosphere.
The universe is constantly expanding, but how do scientists think about what it’s expanding into?
The brain science behind the power struggle between parents and their children.
There’s a lot of hot rock in the way, and sooner or later your hole would collapse.
You can train your brain to wake up on time naturally.
It’s all about perspective: The higher you go, the more you can see the curve.
Jupiter’s composition is more similar to that of the Sun than that of the Earth.
Both gasoline and diesel fuel are refined from crude oil, but they are good for different things and can’t be used interchangeably.
Be very afraid – if you’re an insect.
Communism, Marxism and socialism are all different economic and political ideas. As concepts, they all seek to move toward greater economic equality and public participation in democracy.
Belonging to a group can make you feel safe and supported. But there can be downsides, too.
Listening to music and doing homework can be in harmony − as long as you turn down the volume.
The tilt of the Earth and your distance from the equator are just 2 reasons why summer’s not year-round.
Phones that transmit odors sound like science fiction, but researchers are working on making them real.
Praying in school is protected by the Constitution but only under certain conditions.
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