The great diversity of insect species on earth can be attributed, in large part, to the process of insects co-evolving with plant species. Co-evolution is a change in the genetic composition of one...
A social studies unit on flooding in the Midwest along the Mississippi and Missouri river basins. Includes teacher?s guide, video, and print resources. (NOVA Online, 1996, March 26 original b...
Students will identify some of the solid waste that is generated by them and produced by industry for products they may use. They will then design a solid waste management plan that will use...
With an average energy of roughly 1 million pounds of TNT, tornados are one of nature?s most powerful phenomena. And while atmospheric scientists know a great deal about tornados, such as the c...
Scientist Kevin Petty, of the National Center for Atmospheric Research, studies hurricanes. He is helping to improve hurricane forecasts and warnings by learning how to better predict the intensity...
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