Title: Earth keepers
Description: Examines the lives of three people who were pioneer naturalists and ecologists.
Subjects: Juvenile literature, Biography, Ecologists, Environmentalists, Oceanographers, Conservationists, Naturalists
Places: United States, France
People: John Muir (1838-1914), Rachel Carson (1907-1964), Jacques Cousteau (1910-1997), Jacques Yves Cousteau