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The terror of tornadoes unfolds with this account of the most devastating natureal phenomenon in the world. Includes precautions.

Discusses nuclear energy, its source, how it works, and, giving the examples of Three Mile Island and Chernobyl, how dangerous it can be when things go wrong.

A graphic presentation of the causes and results of earthquakes.

Describes what causes forest fires, how they are detected, techniques used to put them out and the damage that is done. Reexamines sometimes beneficial effects on plant and animal life.

Describes how and why oil spills happen, the damage such accidents can do to the environment, and methods used to clean up spills.

A description of the World Wide Web, including the history of its development and details on how to use it.

A blizzard occurs when severe snow is accompanied by low temperatures and wind.

Explains what species are, how they become extinct, and the effect of extinction on the ecology, and surveys endangered species of plants and animals and possible solutions.

Explains what species are, how they become extinct, and the effect of extinction on the ecology, and surveys endangered species of plants and animals and possible solutions.