[1] He is currently Affiliate Professor of Earth & Space Sciences at the University of Washington.
In August 1968 he married Abby Terris; they separated amicably in 1976 and divorced in 1977.
While on a National Defense Education Act fellowship in 1968 to study Japanese at Columbia, Greene, an outspoken opponent of the Vietnam War, was drafted out of graduate school in November 1968.
He refused induction into the US Army, and after registering and being certified as a conscientious objector served two years of alternative service at Columbia-Presbyterian Medical Center between 1969 and 1971.
Later that year he married Josephine Leffingwell, a Seattle actress and mountaineering instructor.