Natural Disasters

These earthquake pictures show building damage, road buckling and fault lines exposed from earthquakes. Click through our gallery of earthquake pictures.

We know where major fault lines crisscross the Earth and where about 80 percent of the world's earthquakes occur; it's the "when" that seismologists have valiantly struggled with. Why?

By Robert Lamb

I read 'How Floods Work,' but I still have a question: Why are there so many more floods now? It seems like there are floods all the time, and it didn't used to be that way. Is it raining more?

Do scientists really think a massive earthquake could break California in two?

How often have you watched a weather forecaster point to a spiral-shaped cloudy mass with a sense of dread and fascination? What fuels these ferocious storms?

By Marshall Brain, Craig Freudenrich, Ph.D. & Robert Lamb

Lightning is an incredible force of nature. And like many natural phenomena, lightning is not always what it seems. Go behind the mystery and learn what's really going on when lightning strikes.

By John Zavisa & Jesslyn Shields

A tornado can turn a house into toothpicks, but when you think about it, it's really just a funnel of air. What's it like on the inside?

By Charles W. Bryant

Folks in Montana usually expect snow or rain to fall from the sky, not ash. But the 1980 eruption of Mount St. Helens in Washington flung ash across state lines. What is this gritty, gray stuff?

By Robert Lamb

If the big one struck, would you be ready? No? Then start reading and stocking up on food, water and other essential supplies. And hurry up. For some of you, it's not "if" but "when."

By Jacob Silverman

There are obvious craters on Earth (and the moon) that are evidence of a long history of massive objects hitting planet Earth. But what would happen if an asteroid hit Earth today?

By Marshall Brain & Sarah Gleim

San Francisco has a new airport that's supposed to stand up to the rigors of an earthquake. Does that mean that planes can land while a massive quake is shaking the city?

By Katherine Neer

Earthquakes and their resulting aftershocks can be devastatingly destructive. Earthquakes are caused when a fault in the Earth's crust slips, which releases energy waves in the ground. Find a list of 12 of the most destructive earthquakes in history.

By the Editors of Publications International, Ltd.

Learn how avalanches form, how long you can stay alive while buried under an avalanche and what steps you can take to survive.

By Tracy V. Wilson

The wall of water that struck northern Japan on March 11 claimed more than nearly 16,000 lives. While the human and cultural extents of this natural disaster are difficult to grasp, we can explain the physical properties that led to it.

By Robert Valdes, Nathan Halabrin & Robert Lamb

The raging wildfires in southern California have claimed lives and destroyed hundreds of homes. Learn how wildfires start and spread, and find out what firefighters do to battle the blaze.

By Kevin Bonsor

Flooding has claimed more lives than any other natural disaster. Find out how a gentle stream becomes a raging torrent.

By Tom Harris

Mount Vesuvius, located near Naples, Italy, is one of the world's most iconic active volcanoes, renowned for its historic eruption that buried Pompeii. Discover its history, significance, and natural beauty.

By Cristen Conger

Volcanoes are some of nature's most awe-inspiring displays, with everything from exploding mountaintops to rivers of lava. Learn how all the different types of volcanoes work.

By Tom Harris

An earthquake is one of the most terrifying phenomena that nature can dish up. We generally think of the ground we stand on as "rock-solid" and completely stable. An earthquake can shatter that perception instantly, and often with extreme violence.

By Tom Harris & Patrick J. Kiger

Have you ever watched a waterspout move over the ocean or a lake from what you thought was a safe distance? Don't get too comfortable next time. Waterspouts and tornadoes are closely related.

By Kate Kershner

Are you safer from tornadoes if you live in a city? Would Dorothy have ended up in Oz if she lived in New York rather than Kansas? Let's separate fact from fiction.

By Kate Kershner

Every year during tornado season, we see devastating effects of twisters in flat regions. But what about mountains? Do tornadoes steer clear of mountainous landscapes?

By Kate Kershner

Your bathtub is great for taking a soak, giving the kids a bath, or even washing the dog. But can it protect you during a tornado?

By Kate Kershner

There's a tornado coming! What do you do first? Grab your valuables? Seek shelter? Panic? Open the windows? Wait, what? Some say opening the windows in your house makes a tornado cause less damage. Read on to find out the truth.

By Kate Kershner

North America certainly has many claims to fame. It's got the Great Lakes, the Grand Canyon and Niagara Falls -- all pretty impressive stuff. But can it claim tornadoes as uniquely its own -- and if so, what's up with that?

By Kate Kershner