When you see those sunscreen "protection levels," what does that really mean? Try this experiment to find out.

Test your friends to find out if you can replicate the placebo effect's incredible results.

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

This science fair project idea explores how length affects the weight a bridge can hold.

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

Find out whether packaged seeds actually do expire in this new science fair project idea.

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!

Your child helps the environment while saving your family money in this fun and rewarding "Gas Guzzlers" competition.

Your kid will delight in creating an extraterrestrial vehicle from goods found around the house. There's no telling where her imagination will go!

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.