Learn about our response to scents that existed in our environment over evolutionary time and consider why scents might affect our mood state.

This project uses science and art to help students learn and teach others about Earth's endangered and extinct species.

Find out whether putting something on top of a plant will inhibit its growth.

Do suds equal more clean or does a sud-free cleaning agent works just as well or even better?

Do different types of oil mix or stack? Find out in this science fair project idea!

Compare air temperature with the infrared temperature from a reflecting surface at different times of the day, in shade and in sunlight.

Magnets may hold up papers on the fridge, but is it the paper that attracts them? Find out more with this kindergarten science investigation.

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

Will male or female hair grow faster? Find out in this science fair project idea!

How do search engines work? What makes various search engines different? This project delves into the world of web crawlers, caching, indexing and algorithms.

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

Let your kid experiment with textures among fabric and other materials that are smooth, rough, soft, or slippery—and then they'll make a texture book!

Discover if soda geysers will erupt when using regular vs. diet cola and which candies will create eruptions.

Assess physical and mental states of subject before and after drinking coffee. Compare initial expectations with their reported conditions.

Test out various brands of permanent markers to see which one is least water soluble.

Discover whether ants are more attracted to natural cane sugar or artificial sweeteners.

Free science fair project idea that examines air pollution in local environments. Particles are trapped by petroleum jelly on microscope slides.

Science fair project that tests how heat affects the chemical reaction between a seltzer tablet and a glass of water.

This project involves the development of a website using free software online to promote the value of science.

Science fair project that determines the relationship between the temperature and the rate of cricket chirping. How many times do crickets chirp each minute?

Examine the effect of pressure on carbonation in soda.

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

This science fair project idea explores whether color affects a person's emotional state.

Science fair project that cultivates slime mold and monitors the stages of its development.

Will your liquid weigh less once you remove the fat from it? Find out in this science fair project idea.

Science fair project that examines search engine optimization, internet search trends using a statistical study of searched keywords.

In this science fair project, students will try to discover if test subjects can detect the presence of Monosodium Glutumate (MSG) in food.

Science fair project which examines the relationship between frequency of spider web vibration and spider's response time.

Discover whether eating certain foods will make you smell (not only bad breath) but through skin cells.