The Hidden Treasure provides an engaging and educational story for children in late elementary to middle school to help them understand that forest renewal improves the health of forests and provides biomass for many productive uses. It illustrates how wood biomass will play an important role in our nation's future, including energy security through the production of biofuels, biochemicals, and other sources of energy.

Dig It! The Secrets of Soil links the user to an excellent website of the Smithsonian Institution's recent exhibition about soil. It is filled with great photographs, interactive learning, games and little-known facts that show how understanding soils is as important and challenging now as it has ever been.