Plants need nutrients to grow, those nutrients come from the soil, and nutrients can be added to soil to help plants grow better.

Against the backdrop of the devastating 1930's Dust Bowl, this video segment adapted from Interactive NOVA profiles an organic farmer and the techniques he uses to conserve topsoil.

[Free Registration/Login Required] An informational text about biochar, an ancient idea with some present day uses. A question sheet is available to help students build skills in reading comprehension.

This site is an online science curriculum on how to grow plants on the Moon. There are six lessons that have a glossary also included. There are movies that demonstrate concepts, and teacher resources. The sites topics cover, the Earth,...