Text and illustrations explore the theory that the collision of an asteroid with the Earth ended the Cretaceous Period and caused the extinction of the dinosaurs.
Provides a global perspective on environmental issues while demonstrating the concept that the many forms of life on earth depend on one another for survival.
Authoritative text coupled with spectacular photographs offer documentation of the role of naturally occurring fires--its benefits and its dangers--maintaining that fire plays an essential part in the natural balance of nature.
An award-winning writer describes the worldwide trend of global warming, exploring its past, present, and potential future damage to the climate, ecology, and economy.
Describes the physical characteristics, life cycle, and behavior of the two species of wolves found in North America and discusses efforts to save them from extinction by reintroducing them to wilderness areas.
