This fun science fair project idea explains what a circadian rhythm is and explores the types of biological activities that follow a 24 hour cycle in mammals.

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

Consult astronomers for opinions and advice. Devise a mathematical argument regarding the probability of other planets supporting extra-terrestrial life.

Explore the negative and positive consequences of stereotypes.

Find out if most people can distinguish the difference between tones on different instruments.

This science fair project idea explores whether it is easier to balance on a narrow ledge or on a rope.

Devise an argument for or against the possibility of resurrectin extinct species through DNA manipulation. Analyze data, report findings.

Would you be able to tell the difference between colored contacts and natural eyes from a normal distance? Find out in this science fair project!

The purpose of this study is to determine if people can tell the difference between organic and conventional food from looking at, smelling and tasting it.

This science fair project idea explores the relationship between oil and water in terms of density as well as hydrophilic/hydrophobic compounds.

Look at people's face shape. Do you think their face shape affects your perception of kindness? Find out more in this science fair project idea!

This science fair project idea determines an average personâs ability to use their anaerobic power system over a period of 2 weeks.

This science fair project determines what effect substances have on ice, and which of these products most effectively melts ice.

Ever wonder why refrigerator lights turn off when you close the door? Does the darkness prevent food from spoiling? This experiment, determines just that.

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

This experiment will evaluate bacterial content on toothbrushes before and after different cleaning methods to determine which method of disinfecting is best.

The objective of this science project is to examine the factors that affect the dispersion of oil in water, including water agitation.

Science fair project that measures the relative times it takes a plastic bag and a biodegradable plastic bag to decompose.

This project explores what happens to a rubber band when it is heated and cooled.

Science fair project which determines whether it is numerically possible to be connected to every person on the earth within six degrees of separation.

Should you use âFITâ Fruit and Veggie Wash or plain water to wash your produce? Find out in this science fair project idea.

The project determines the forces that cause paper airplanes to fly and determine which type of paper airplane flies the farthest.

This experiment uses a voice recorder to monitor the progression of a message in the telephone game as it deviates from the original.

Create a double-slit interference out of cardboard. Produce an interference pattern that demonstrates the wave and particle characteristics of light.

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.

It has long been believed that weather influences mood and behavior. This experiment will evaluate if weather can really impact the way people feel.

Culverts transport seeds away from their original location to different places. This science project examines the effect of culverts on plant growth in streams.

Research Earthship buildings. Draft a unique architectural design that repurposes used, discarded radial tires. Build scale model of structure.

Check out this cool science project idea to explore how temperature creates annual rhythms that govern plant growth.

This science fair project compares the abilities of men and women to understand subtle communication through body language.