Science fair project which determines whether plants are able to get enough nutrients from different types of garbage.

It's a rare kid who doesn't like a sandbox. Next time you're out digging, build in some earth science, too.

Celebrate Earth Day with a decorative tree made out of strictly reused and recycled materials.

Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

Create a mini plant habitat with your kid to help teach him what it takes to make an ecosystem work.

Learners hypothesize about and experiment with soil erosion in this hands-on activity.