An introduction to the concept of air pressure, which is the weight of the Earth's atmopshere. A barometer is an instrument that measures air pressure.

Information about careers as a geologist, include the types of jobs, pay, and what geologists do.

Rainforests, which provides us with the most air we breathe, cover 2 percent of the world's land mass but have more than two-thirds of living species. They are being cut down because of financial interests such as logging, agriculture, fuel wood, large dams, mining and industry, colonization schemes, and tourism.

Facts and figures about the Amazon River Basin rainforest of South American. The tremendous biodiversity found in this region is under threat from human developers and must be preserved.

Explores the use of Fossil Fuels and their future depletion. Postulates that when the demand for fossil fuels is greater than that of supply, it will have a drastic effect on almost every aspect of life.

Frogs and toads have many similarities and differences.