Earth Science

Earth Science covers all facets of how the earth works, from from volcanoes to the world's oceans.

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Can scientists clone dinosaurs?

The 1993 movie "Jurassic Park" did a good job of bringing the idea of cloning dinosaurs into popular culture. It portrayed dinosaur cloning in a way that made sense to a lot of people, but is it really possible?

How Do Scientists Determine the Age of Dinosaur Bones?

Every time a new fossil is found, one of the first things scientists determine is how old that fossil really is. But how do they determine it, and how can they be completely accurate?

How Fossils Work

Fossils tell a story, much like the clues at the scene of a crime. Researchers look for evidence and paleontologists study that evidence to answer questions about the past.

How the Rosetta Stone Works

Hieroglyphics used to be a language that no one -- Egyptian or otherwise -- could decipher. With the help of the Rosetta Stone, that all changed.

How Dinosaurs Work

To see a dinosaur these days, you can visit any number of museums or traveling exhibits. But you don't necessarily have to leave your yard either.

Is an ancient sea scorpion the largest bug ever to live on Earth?

The sea scorpion may have been the largest bug to ever live on the Earth, according to a recent find. Learn more about the giant sea scorpion.

Exactly what happens if we run out of water?

On a planet that is 70 percent water, people don't have enough clean, safe water to drink. We're in a water crisis, and water rights are becoming a big issue. What happens if we just plain run out?

Why can't we manufacture water?

Water is just hydrogen and oxygen, so why can't we do what nature does and combine the two? Unfortunately, it's not that simple, and the results can be rather ... explosive.

How Water Works

In its purest form, it's odorless, nearly colorless and tasteless. It's in your body, the food you eat and the beverages you drink. All forms of life need it. What substance is more necessary to our existence than any other? Water.

Why is the world's biggest landfill in the Pacific Ocean?

What's as big as a continent and sitting in the middle of the Pacific Ocean? A pile of garbage that extends 100 feet (30 meters) below the surface of the water.

7 Wonders of the Natural World

The 7 wonders of the natural world capture the imagination with their natural power and beauty. There is nothing that man can create that can match the beauty nature can create. Learn about all 7, including the great barrier reef.

Why is Arctic ice melting 50 years too fast?

It used to take three years to get through the thick ice of the Northwest Passage. Now, you can sail from New York to Korea without hitting any ice at all. Where is all the ice going, and what are the ramifications of it melting 50 years too fast?

How Rogue Waves Work

Also known as "freak waves," these colossal walls of water have been alleged to be in the range of 100 feet or more. Learn what separates rogue waves from other large waves, what causes them and find out about some of the better-known rogue wave incidents.

Should we be worried about the dead zone in the Gulf of Mexico?

The dead zone, caused by massive amounts of algae growth, is a vast area off the Gulf of Mexico that is deadly to marine life. How is human activity making the dead zone worse?

How can a lake simply disappear?

A lake in South America has disappeared and has left scientists wondering where all the water went to. Is it possible that a lake can abruptly vanish?

How can parts of Canada be 'missing' gravity?

For more than 40 years, scientists have tried to figure out what's causing large parts of Canada to be "missing" gravity. The force of gravity around Hudson Bay is lower than surrounding areas. Learn about two theories that may explain the phenomenon.

How Maps Work

It's no secret that maps are handy. If you get lost, a map can help you find your way. Maps are representations of data that can describe nearly anything about the world. Find out how map data is gathered and how maps are made.

How DEPTHX Works

What would you need to explore an ocean on Europa, one of Jupiter's moons? Among other things, you'd need a submersible vehicle to explore the ocean and relate findings back to Earth. Stone Aerospace is developing just such a vehicle: the DEPTHX.

What is a geomagnetic substorm?

On February 17, NASA launched a rocket with a record-setting five satellites onboard. The $200 million mission is to discover the source of an atmospheric phenomenon known as the geomagnetic substorm.

What if there were no gravity on Earth?

Have you ever wondered what would happen if we were able to flip a switch and turn the Earth's gravity off for a day? The end result may surprise you.

How the Earth Works

Even though it's tiny compared to the rest of the universe, the Earth is enormous, and it's extremely complex. Systems powered by the sun are able to sustain the various life forms living on Earth. Learn what ties all the parts of the Earth together.

Why does the North Pole move?

You probably know that the North Pole does not stay in the same spot. The North and South Poles can actually change positions. What causes this? Find out in this article.

How Fire Works

Few things have done as much harm to humanity as fire, and few things have done as much good. Find out where fire comes from and see why it behaves the way it does. The answers might surprise you!

How Quicksand Works

Countless movies and television shows depict quicksand as some kind of living creature that sucks its victims down into a bottomless pit, never to be heard from again. Well, you can't believe everything Hollywood tells you.

How Rip Currents Work

Rip currents are the number-one concern for beach lifeguards: About 80 percent of all beach rescues are related to rip currents. Learn what they are and what you should do if you get caught in one.