Science Questions

Science questions are a fun and interesting way to learn about planet Earth, organisms and the universe. In this section you'll find an incredible collection of science questions covering a wide variety of topics.


We humans like to think we're so technologically advanced, yet mice constantly prove us wrong, handily evading our efforts to trap them. So we at HowStuffWorks.com are asking you to devise a better mousetrap. Isn't it about time mice learned how advanced humans really are?

You've set the table at least once in your life, right? Have you ever wondered why we need all that silverware? And so we challenge you, inventive, fork-wielding readers, to come up with a design for the master fork, the one that will put all other utensils to (stainless) shame. What's your idea?

Gravity dictates the structure of the universe, from the way cosmic bodies form to the way they orbit more massive planets or stars. Has it always played such a starring role in our cosmic history?

Gravity is great, but if we could figure out how to selectively reduce its effects, we could cut the energy demands of travel and transportation. Don't cheaper airline tickets sound pretty good?

Touch-sensitive lamps is explored in this article from HowStuffWorks. Learn about touch-sensitive lamps.

At HowStuffWorks, we're always curious, and 2008 gave us a lot to be curious about -- financial bailouts, skyrocketing food prices and, of course, the Google algorithm. Here are our top 10 questions of the year -- answered. What are yours?

Before you hurriedly unwrap a stick of gum and twist the foil around the closest blown fuse, you may want to consider a few things. You could have a fixed fuse -- or a full-blown fire.

You stay behind at work and agree to close up alone. You go into the walk-in freezer to put away some food, and the door shuts behind you. You do everything you can think of, but you can't get it open. Now what?

In movies, bad guys can take over an airplane and start shooting up the place. Wouldn't the plane explode or depressurize as soon as the bullet pierced its skin?

A man has a gun. But this is no ordinary man, and this is no ordinary gun. This isn't a setup for a sci-fi thriller. It's the premise for quantum suicide.

The backscatter X-ray system that can see through clothes has begun its test run at the international airport in Phoenix. But privacy is only one concern facing its implementation.

Learn how a machine can detect liquid explosives in sealed containers.

You know that bumper sticker that says "Shoot your TV"? Click here to find out what would happen if you actually tried it (it's best to let us do the dirty work).

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?

How does chlorine work to clean swimming pools?

I have been smoking for 50 years and have always wondered why cigarettes have filter tips. I can remember when none of the cigarettes on the market had filters, and now nearly all of them do. Does the filter do anything?

My glasses have an anti-reflective coating. How does that work?

Crayola crayons have nurtured childhood creativity and remained safely edible for over 100 years. Now learn their story- how they originated in the 19th century, how they've changed, and we'll even tell you how old that familiar label is.

The lead in a pencil is not actually lead. It is a mixture of graphite and clay, but have you ever wondered how they get the lead inside a wooden pencil. Find out how pencils are constructed in this article from HowStuffWorks.

Although technology is helping to make the world seem a lot smaller, there are still major differences between countries. Learn about electrical standardization around the globe.

How do trick birthday candles work -- the kind that re-light themselves after you blow them out?

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

You can find glow-in-the-dark item everywhere these days. Have you ever wondered how these items produce their light? Find out the answer to that question in this article.