Describes the discovery of fossilized remains of the largest dinosaur yet known, what has been learned so far from the remains, and what we currently believe about the dinosaurs in general.
Describes the historical debate over the naming and assembling of the fossil remains of Apatosaurus, also called Brontosaurus, and how the dinoasur may have lived.
An introduction to the physical characteristics, habits, and natural environment of the plant-eating dinosaur who measured between twenty and thirty feet but whose brain was about the size of a walnut shell.
Describes the physical appearance and probable behavior of the armor-plated Ankylosaurus and the fossil evidence which has provided paleontologists with this information.
Focuses on the ever-growing problem of managing the many types of solid waste and the hazards they pose to people and the environment. Readers learn how they can help in waste reduction efforts.
Discusses the causes of toxic waste and its effects on the environment and life. Outlines methods of disposal and how to protect yourself from toxic waste effects.
Discusses the importance of a clean water supply and how water pollution threatens the lives and health of people, animals, and plants. Readers learn how to contribute to anti-pollution and conservation efforts.