conservationists

Describes the nature of oceans, the life that they support, and the scientists who study and protect them.

Describes different kinds of grasslands, their importance, and the work of the people who help to conserve them.

Provides an introduction to the forest biome, including coniferous, deciduous, and rain forests, and discusses the work that scientists are doing to study and preserve them.

Examines the lives of three people who were pioneer naturalists and ecologists.

A definitive biography traces the life of John Muir from his boyhood in Scotland up to his death on the eve of World War I and offers important insights into the passionate nature of America's first great conservationist and founder of the Sierra Club.

Introduces the life of John Muir, the naturalist who formed the Sierra Club to help preserve the Sierra Mountains.

A biography of the naturalist who, among other activities, founded the Sierra Club and, as an early proponent of wilderness preservation, was influential in establishing the national park system.

Explores the life and work of author Aldo Leopold, focusing on his lifelong quest for answers to the fundamental question of how people can live prosperously on the land and keep it healthy.