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The Solar System as we know it doesn’t really make sense without a ninth planet. So then why can’t we find it?
There are many pieces of evidence to help explain why the Earth spins, and some major mysteries.
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An astronomer takes us on a tour of the universe to learn about the birth of stars and planets and how they get their spin.
Analyzing DNA can tell us what colour a person’s eyes are.
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Our DNA contains the information that determines the colour of our eyes.
It wasn’t flying that gave birds the advantage.
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Birds and dinosaurs lived together for millions of years, but only toothless birds survived the asteroid impact that upended life on Earth.
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Day to day, sunshine might not affect our mood – but light and dark seasons do.
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It depends on whether you are learning as a baby or not.
Cells at Alcatraz, a famous former prison on an island off the coast of California.
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Prisons and jails have a long history, but they weren’t always used for the same kinds of punishment.
The slice you see cut out of the Earth reveals its core, depicted here in bright yellow.
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Starting at the surface, you would have to dig nearly 2,000 miles before reaching the Earth’s core. No one could survive that trip – and the 10,000-degree F heat once there would vaporize you anyway.
3D visualisation of gravitational waves produced by two orbiting black holes.
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To understand this question, we need to travel back in time.
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Some animals have belly buttons that are easy to see, but others have ones that are more difficult to spot.
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Rainbows are made when water droplets split light up into colours.
Your zodiac sign – like Sagittarius, the archer – might be in the stars, but your future isn’t.
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Astrology and astronomy were once practiced side by side by scientists like Galileo and Kepler. And they’re more similar than you might think.
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Lots of kids wonder about this. Here are some of the basics.
Making a book takes lots of brainstorming and writing, but there are many steps to printing it, too.
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It takes a lot of steps – and help from other people – to make a physical book you can hold in your hands.
The TV in your home is very different from the television sets of just a few years ago.
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Pictures and sound, flying through the air to a box in your house? Back in the 1940s, it seemed like a miracle.
Emotions can get in the way of knowing what’s true.
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What’s true and what’s not? An expert in media literacy explains how to evaluate information.
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Many galaxies are too faint or small for us to observe easily – but science can help us work it out.
Turkeys have always been a fixture in the holiday’s marketing.
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A mix of New England and British traditions and historical events led to the particular poultry you’ll find on Thanksgiving tables everywhere.
The Seli’š Ksanka Qlispe’ Dam provides enough electricity for about 147,000 homes in the Flathead Indian Reservation in Montana.
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How does flowing water make electricity? An engineer explains hydroelectric generation.
Participants in the Indigenous Peoples Of the Americas Parade in New York City, Oct. 15, 2022.
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Geographic, cultural and political identity are all part of being Indigenous.