Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

This experiment investigates if stress alters body temperature.

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

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

In this experiment, you will find out how human error can cause faults in any science task. This includes experiments conducted by famous scientists also.

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

This experiment investigates if small changes in your diet can alter your basal body temperature.

This experiment investigate whether children in different age groups learn better from a computer program or a human teacher.

This science fair project idea explores if male or female humans are more likely to exhibit some form of color blindness.

This experiment will explore the possibility of a connection between lunar cycles and how humans are affected.

Make a backbone model to explore human anatomy and life science.

This science project has students study the idea of human beauty.

Can playing video games trigger an adrenaline rush even though there's no real danger? In this cool experiment you'll learn all about how fight-or-flight works!

In this insulation experiment, you'll learn which clothes keep you warm in the cold, and which make you shiver.

This science fair project idea explores how far the average human can see.

This science fair project idea determines how your body responds to allergies.

Research optical illusions and human auras. Understand why the probable cause of perception is mach bands.

This science fair project idea explores whether the color of surroundings affects human mood.

The goal of this fun science experiment is to explore the limitations of sight and learn working of the human eyes.

This project examines the phenomenon of using a mirror to trick a person's brain into experiencing sensations in body parts not actually affected.

Learn about the anatomy of the autonomic nervous system and its relationship to the rest of the body.

This science fair project idea explores the fastest average speed a human can talk.

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

Explore the concept of receptive fields and why different parts of our body have different levels of sensitivity.

Explore the neural and mental mechanisms at play in mental imagery.

Design a survival kit. Brainstorm various survival scenarios. Address basic human requirements and natural resources. Describe each tool as well uses.

Study structure of the lens found in the human eye and determine whether it is concave or convex. Prepare a ray diagram, formulate hypothesis.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

This science fair project focuses on the use of the enzyme amylase found in human saliva to break down starch into sugar.