[Free Registration/Login may be required to access all resource tools.] Traces changes in Earth's climate through Earth history, especially in the past 2,000 years.

[Free Registration/Login may be required to access all resource tools.] Presents the way geothermal energy is harnessed and some of its benefits and costs. Downloadable resources are also available.

[Free Registration/Login may be required to access all resource tools.] Looks at how atmospheric circulation cells affect the climate of regions.

[Free Registration/Login may be required to access all resource tools.] Looks at how El Nino and La Nina affect the climate.

[Free Registration/Login may be required to access all resource tools.] Describes some factors that lead to long-term climate changes.

[Free Registration/Login may be required to access all resource tools.] Discusses the impacts of hazardous waste on the environment and human health, and the provisions of the Superfund Act.

[Free Registration/Login may be required to access all resource tools.] How close a region is to the ocean affects its climate.

In this lesson, students conduct heat transfer experiments to investigate why the Earth is still hot at its core, even after billions of years since its formation. They will learn that the rate of heat transfer is dependent on an...