Evolution is the topic discussed in a survey that covers the transition from water to land life, the Age of Reptiles, and the emergence of mammals, as well as genetics and heredity
Traces the earth's origins, discusses earthquakes and volcanoes, and looks at our climate, weather, oceans, lakes, rivers, wastelands, and influence on the planet
Describes different types of nuclear reactors and discusses some safety concerns including disposal of spent fuel and decommissioning of nuclear power plants
Presents simple experiments and activities to demonstrate why some objects bounce and roll and others do not, why some balls bounce higher than others, how to measure balls, and how hard a rolling ball can push.
Examines the growing practice of altering genes for the purpose of curing disease and improving plants and animals, presenting both sides of this controversial issue
Describes the greenhouse effect, the gases that cause it, how it affects the environment, ways to reduce the emission of greenhouse gases, and alternative, cleaner sources of energy