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George Perkins Marsh
Began doing research in and writing books on his observations of man's interaction with nature. -
John Muir
In 1892 John Muir establishes the Sierra Club to promote conservation, preservation, and appreciation for nature. -
Theodore Roosevelt
Began massive natural preservation and conservation legislation. Also, he very actively promoted the preservation of nature. -
Aldo Leopold
One of he earliest to study wildlife management. Also, he was one of the first to attempt environmental recovery techniques. -
Rachel Carson
Carson writes and publishes the book Silent Spring to expose and predict the highly offensive effects of DDT use in America. -
Paul and Anne Ehrlich
Known for creating many theories about overpopulation and human impact on the environment via population, affulence, and technology. -
E.O. Wilson
E.O. Wilson becomes highly active in global conservation efforts and begins writing and plublishing books on human interactions with nature. -
James Lovelock
He established the Gaia Theory stating that all organic and inorganic parts of an environment come together to form an interconnected complex system. -
Lois Gibbs
Mother of the Superfund, Lois Gibbs became a major proponant of toxic chemical control following the Love Canal Incident. -
Armory Lovins
Begins to become highly active in the fields of natural resource management and energy management. -
James Hansen
Major researcher in the field of climatology and using models he developed for the Venusian atmosphere to relate to climate change and patterns in Earth's atmosphere. -
Eugene and Howard Odum
Pioneering the study of dynamic environments and the mitigation and prevention of pollution. -
Lester Brown
Founder of Earth Policy Institute with an aim for planning for a economically and environmentally sustainable globe.