Morgan, Sally

Discusses the pleasures and responsibilities of owning a pet.

Explains what the ozone layer of the atmosphere is, what destroys it, how it is measured, how this depletion affects humans and life on earth, and what can be done to save it.

Examines the science behind the genetic modification of foods, looking at how it has been used to create crops that are resistant to pests and disease, encourage plant and animal growth, and add vitamins to common foods; and discusses why some people are opposed to the practice of genetically altering food.

Describes rain forests, the life they support, their deterioration, resources they provide, and efforts to protect them.

Looks at how energy is used; shows how fossil fuels are harvested and used in power stations to produce electricity; studies ways of producing electricity from alternative sources; and considers ways to save energy.