He worked as a professor at Columbia University from 1937 to 1953. Moving to Arizona in 1952, he wrote books about natural issues of ecology, the southwestern desert environment, and the natural history of the Grand Canyon, winning renown as a naturalist and conservationist. Krutch is possibly best known for A Desert Year, which won the John Burroughs medal in 1954.
Joseph Wood Krutch makes an excellent connection between Thoreau's life and his writing, showing how each informs the other as a way of seeking a unified understanding of experiential phenomena. In a way this is a philosophical departure from Emerson and the other transcendentalists who rely so much on intuition. In other words Thoreau writes what he lives, rather than what he perceives.