Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

Find out whether packaged seeds actually do expire in this new science fair project idea.

What is the best stain remover for clothes? In this fun and easy science fair project idea, students will identify the best method for laundry stain removal.

What's the chemistry behind dyeing Easter eggs? Will adding vinegar to dye help the eggshell absorb the color? This colorful science project has the answers!

Discover whether cold or hot water from the faucet will boil faster on the stove.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

In this CD hovercraft science project, students will construct their own DIY hovercraft.

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

This science fair project examines how seeds hitchhike on animals and clothing.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

It's not actually that hard to get energy from garbage! Kids learn how to make biogas in the form of methane with this cool and easy science fair project idea.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.