Environmentalist writer and activist who published books and papers on the environment of the West.
He formed his environmentalist views while studying philosophy at the University of New Mexico, taking time in between his studies to explore the land.
His best known work Desert Solitaire explored the consequences of human intrusion into the desert landscape of southeastern Utah.
He was born in Indiana, Pennsylvania and his father was a farmer and a logger.
Rachel Carson was another prominent American environmentalist.
