[ Mature Teens ] A detailed historical discussion on how and why the Earth's climate changed through time.

[ Kids/Teens ] Definition of climate and how it varies.

[ Mature Teens ] Explore the causes and effects of climatic and environmental change through the use of real satellite data.

[ Teens/Mature Teens ] Provides data for major United States cities showing temperature and rainfall averages and extremes.

[ Teens/Mature Teens ] NOVA and Frontline report that examines the science and politics of global warming and what climatologists really know about the greenhouse effect. Includes interactive tutorials.