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Arctic ice is melting. Coral reefs are disappearing. Sea levels are rising. These events are part of an even bigger p...

Find out more about global warming. How, and why, we should slow it?

Take a peek at our planet's layers, learn what secrets rocks reveal, and gain a long view of history.

Scientists are developing and improving "clean" energy sources. But for the next hundred years, the world w...

OLogy learning: Find resources for K-5 grade levels.

Venus and Earth are sometimes called sister planets because of their similar size, but don't let this comparison fool...

Winter brings snow and ice in places like northern Minnesota. But during the same season along Florida's beaches, tem...

Explore the connections between technology, population and rising atmospheric CO₂.

When you ride in a car, watch your favorite television show, or take a hot shower, you're most likely using fossil fu...

If you ever go to Mercury, bring your sunscreen because it is the planet closest to the Sun. You'll also need a pair...

Find out where Rob has followed his born curiosity.

Find out how Lisa’s work impacts the health of communities.

Hands-on

Find out what you can do to save energy and slow climate change!

How enlightened are you about the subject of light? Play this trivia game to find out!

Think you're an expert on changing climate? Test your knowledge with this quiz!

Find out how scientists are using genetics to change the food you eat.

Edwin Hubble was one of the great astronomers of the 20th century. His work made the Universe a bigger place. He prov...

On a clear night, Mike Shara sees more than just the beautiful twinkling of stars when he gazes at the sky.

A galaxy is a giant, spinning object made of gas, dust, and stars held together by gravity. Galaxies come in differen...

Most volcanoes form along plate boundaries. But some of the world's largest and most active volcanoes are found far f...

Find out why Alice in Wonderland is Mandë's favorite poison story.

Hands-on

How do mammals respond to cold water? Take the plunge into icy water and find out.

Match these awesome images from the Hubble Space Telescope with their descriptions.

The Hubble Space Telescope is the first major optical telescope to orbit Earth.

Medical doctor Lisa Cooper and epidemiologist Jennifer Nuzzo answers kids’ questions.

There are more than 250 kinds of vipers, a family of poisonous snakes. The largest of all is the gabon viper.

The king cobra is the largest venomous snake in the world. Whether slithering on land, climbing trees, or swimming, i...

Hands-on

See if you can find north by making your own compass.

Reading + Video

Earthquakes are happening all the time. Find out what makes the earth shake.

Scientist Rob DeSalle answers kids' questions about the brain!

Paleontologist Mark Norell answers questions about T. rex.

Biodiversity is the rich variety of life on Earth. But why is it important?

What kind of person becomes an ichthyologist, a scientist who studies fish?