This innovative technology is based on the fact that water can be collected from fogs under favorable climatic conditions. Fogs are defined as a mass of water vapor condensed into small water droplets at, or just above,...

This is a publication of the Leopold Center for Sustainable Agriculture, Iowa State University. The research for this publication compared fuel use, distances traveled, and carbon dioxide emissions associated with the...

This lesson summarizes our dependency upon fossil fuels, pointing out that there are very few aspects of our daily life that are not impacted by their use. The discussion centers around whether these fuels could be...

This lesson provides an introduction to the world oil market and the United States' dependence on it. Topics include our current usage, sources, and the political implications of acquiring oil from an international...

Designed as a collaborative venture between the Nature Conservancy and the World Wildlife Fund, the Freshwater Ecoregions of the World (FEOW) site provides a dynamic visual representation of the Earth's freshwater...