What is biodiversity? Kids will study different areas of their backyards to see which is the most diverse to learn about biodiversity and random sampling.

Soil is made up of different layers. How far down do you need to dig to find the soil horizon, or the place where bits of leaves and branches become soil?

This easy at-home experiment is a great way to "see" science.

This science fair project investigates why the number of visible stars changes from place to place.

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

What is mulch? Kids will provide soil with a wet blanket of mulch and see if that helps keep drought-stricken soil damp.