You want to make a potato powered light bulb, but you're not sure how to do it. Learn about how to make a potato powered light bulb in this article.

By HowStuffWorks.com Contributors

We can usually see rainbows right after a rainstorm on a warm Spring day. These giant colorful arcs stand out against the dark rain clouds. Have you ever wondered what causes this phenomena? Find out how rainbows are created in this article from HowStuffWorks.

By Austin Henderson

I live in California, where we are having a power crunch. I have a hypothetical question: Could I power my computer or my TV with a bicycle generator?

By Austin Henderson

Green, clean energy sounds good at first: Harness the power of the wind to run our creature comforts. But could the sounds people hear (and don't hear) from wind turbines endanger their health?

By Julia Layton & Austin Henderson

How can my glasses change from transparent, when I'm inside, to dark when I go outdoors?

By Austin Henderson

When an airplane flies faster than the speed of sound, you hear a large booming sound. But how can something that seems so simple cause such a boom?

By Austin Henderson

Many cultures have a flood myth -- an ancient story of a deluge that swallowed the Earth. So could a great flood really have happened, and how would we be able to tell?

By Maria Trimarchi

Apollo astronauts left a lot of stuff behind on the moon. Can you see any of that from Earth, even with a telescope?

By Valerie Stimac & Sascha Bos

If you took one of our recent newsletter quizzes, you've come to the right place for the answers.

By Madison Orradre

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.

By Tom Harris

Discover the profound messages of 811 angel number! Unveil insights about abundance, transformation, and spiritual growth. Explore 811 now.

By HowStuffWorks

Unlock the secrets of dream meanings! Explore the profound interpretations of your dreams. Discover the hidden messages within.

By HowStuffWorks

The global oil supply can't meet the demand forever. Will the last drops of oil lead to widespread anarchy, the end of globalization and the relentless exploitation of previously protected drilling sites?

By Robert Lamb & Sascha Bos

We take X-rays so much for granted. We get them at the dentist's office and watch them while clearing luggage through security at the airport. But did you know they were discovered by accident?

By Josh Briggs

Like a firefighter or a rock star, an astronaut is one of those jobs kids say they want to have when they grow up. If you're still serious, we can tell you what it takes.

By William Harris & Sascha Bos

Welcome to Yellowstone, a natural wonderland that's home to stunning vistas, vibrant plant and animal life ... and a massive and potentially devastating supervolcano.

By Chris Opfer

Men in black have been in UFO folklore since Albert Bender mysteriously shut down his International Flying Saucer Bureau. Where do men in black come from and whose interests do they serve?

By the Editors of Publications International, Ltd.

Collective hysteria can spread when a fear exists of exposure to a disease, combined with a contained environment. Learn more about collective hysteria works.

By Jacob Silverman & Austin Henderson

Whether the circle is as big as planet Mars or as small as a tennis ball, the ratio of its circumference divided by its diameter will always equal pi (3.14). But why?

By Marshall Brain, Dave Roos & Austin Henderson

The autumnal equinox is the day Earth is perfectly angled to the sun, so the day and night are of equal length. Well, almost.

By Kathryn Whitbourne

Could a person catch fire — with no apparent spark or flame — and then burn so completely nothing else ignites around them?

By Stephanie Watson & Mark Mancini

The simplest explanation is usually the correct one. Or is it? Learn how detectives, doctors, scientists, mathematicians, skeptics and theologians all use the principles of Occam's Razor to slice through data and arrive at a particular worldview or theory.

By Shannon Cicero

Around 1,800 thunderstorms are occurring on the Earth at any given time. But how do they form, and what causes them?

Delve into the mysteries of Scorpio compatibility. Explore love, friendship, and passionate connections with the enigmatic Scorpio zodiac sign.

By HowStuffWorks

Unlock the secrets of Libra compatibility. Discover the perfect matches and dynamics of love, friendship, and harmony with Libra zodiac.

By HowStuffWorks