The objective of this science project is to determine the relationship between carbon dioxide gas and the temperature of the atmosphere.

Looking for a project on fossils? Check out this fun science fair project idea to understand the process of coal formation and fossils part in that formation.

Science fair project that tests whether cats have a preference for organic food.

Ethanol can be used as an alternative fuel! The purpose of this experiment is to identify a starch plant that produces the largest quantity of ethanol.

Determine whether carpet placed on a lawn will kill grass and weeds. Choose an area of lawn that you would like to remove, record grass that is dead or dying.

Create an organic plastic product using vinegar and cream. Track decomposition over course of several weeks. Compare decomposition with traditional plastics.

Have you ever seen fruit decay? Find out if a fruit will rot faster if you open it versus leaving it untouched!

Science fair project that demonstrate how abrasions are formed on rocks in nature and the variations between types of rocks.

What is mulch? Kids will provide soil with a wet blanket of mulch and see if that helps keep drought-stricken soil damp.

Why do ants like sugar? Do ants like artificial sweeteners too? Kids find out with this great inquiry-based science fair project.

Check out this fun science project idea on ecological succession and learn the main difference between primary and secondary succession.

Determine how effective animal camouflage is by simulating it in an indoor and outdoor setting.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

This science fair project studies which color(s) of flowers butterflies & bees are attracted to and if color plays a role in flower selection for pollination.

This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

This science project teaches students to classify different shapes of leaves.

This science fair project idea discovers which brand of bubblegum produces the largest bubbles.

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

Science fair project that uses muriatic acid to develop fingerprints that would otherwise be invisible.

In this science fair project, students evaluate if astrological signs provide clues about people's personalities.

Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.

This science project challenges students to take learned information about weather and climate control and apply it to come up with creative ideas of their own.

What is biodiversity? Kids will study different areas of their backyards to see which is the most diverse to learn about biodiversity and random sampling.

This science fair project idea raises awareness of a real ecological issue.

How do organic materials become soil? This science experiment measures what materials biodegrade.

Learn about the greenhouse effect- and get great science fair experiment ideas. Read more.

This experiment will explore if a randomly iterated algorithm will result in a pattern.

This science fair project idea determines if the color of light affects the growth of plants.

Science fair project in which you will build your own algae photobioreactor which will meet the physiological requirements of algae for maximum growth.