Energy for Sustainable Development
Esd Bulgaria: Kids & Energy: Energy and Trees
An interesting discussion of energy forestry, where a fast-growing species of tree or woody shrub is grown specifically to provide biomass or biofuel for heating or power generation. Explains some benefits and problems with this industry.
Wessels Living History Farm
Living History Farm: Contour Plowing
Wessels Living History Farm explains some of the history behind contour plowing in the United States. Great photo illustrating contour planting on terraces in Iowa included.