Do human lie detectors exist? Charge up your powers of observation to see if you can tell a lie from the truth.

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

This science fair project idea explores whether a sundial is as accurate as an atomic clock when telling time.

This science fair project idea compares the cuteness reaction between genders.

Demonstrate and explain holographic technology. Determine if a holographic image of a magnifier still magnifies the object beneath it. Explain the effect.

This science fair project idea investigates whether body language and heart rate can decipher who's lying and who's not.

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

Do lefties just write different or are their brains different? This science project has students explore what it means to be left handed.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

This science fair project idea tests whether it is true that humans are in the morning than later during the day/night.

Determine if picking up fallen food in 5 seconds or less prevents the transfer of bacteria from the ground.

Determine if âdouble dippingâ chips really spreads more germs than dipping only once per chip.

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

Do you think heat can affect a plant's growth rate?

This science fair project idea determines exactly how much of an effect road grade has upon a cyclistâs speed.

Learn all about balance and motion as your child designs a corn maze!

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

This science experiment tests if dog saliva can really help heal wounds.

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

Do dogs understand English? Kids will find out with one of our favorite dog science fair projects that tests how dogs process human language and other cues.

This science fair project idea determines whether dogs can be trained faster using a food reward or praise.

In this activity, your child will transform an egg into a glowing, bouncy "ball" that they can play with.

Kids conduct a cool balloon rocket experiment in this fun science fair project idea. Does a greater volume of air mean a greater distance traveled?

The science project fair idea explores the interaction between your nose, mouth, and brain when tasting a new food or drink.

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.