This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

Here is a cool and easy science project to determine the rate of chlorophyll breaks down and how it affects the color change of grass from green to yellow.

Science fair project that helps visualize how the human brain functions by constructing a model of a brain.

Science fair project that examines learn how the angle of incidence affects the efficiency of solar panels. How does a solar cell work?

The objective this science fair project is to determine whether a bigger bag will allow a homemade hot air balloon to fly higher than smaller bag.

Here's a guide to starting a community clean-up project from scratch.

This science fair project idea sheds some "light" on which color of candles burn the longest.

Science fair project that determines whether disinfectant sprays or disinfectant soaps are more effective at removing bacteria from hands.

Science fair project that examines how yeast grows, and which conditions allow for optimal growth. What types of nutrients does yeast prefer?

Determine whether the application of Febreeze will lower the bacterial count.

This science fair project idea studies the differences in gender perception between people.

The purpose of this science project is to investigate which will grow larger plants: compost, soil and Miracle - Gro, a mixture of both.

Check out this cool and free middle school science fair project idea on how to make a solar oven.

Determine whether magic salt is more effective at melting snow than regular salt. Pour one ounce of salt over the ice cubes, compare the melt downs.

Science fair project that identifies the nature of ionic and covalent bonds and determines how ionic and covalent compounds differ.

The purpose of this science fair experiment is to investigate whether the color of your hair affects how much static electricity is carried.

Get a fun high school physics science fair project idea one of the states of matter called plasma and the applications of this unique coil.

This science project examines the effectiveness of various types of laundry detergents on stains trapped on a white handkerchief.

The purpose of this science fair project is to investigate whether cooking seeds before planting will speed up germination and growth.

Do hand soaps and sanitizers prevent the growth of bread mold? If so, why? Kids will find out with this fun and informative science fair project idea.

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

This science fair project idea determines if pancreatic lipase can break down lipids on its own or does it require the assistance of digestive bile salt.