. First formulated endosymbiotic theory, stating that eukaryotic organism
s began as prokaryote
s that were engulfed by other prokaryotes and continued to live in a symbiotic
relationship. Now working on the Gaia hypothesis
(her spelling), which considers the entire earth
as an organism.
She received her Ph.D. from the University of Calfornia, Berkeley in 1963 and is currently a Distinguished University Professor at the University of Massachusetts, Amherst.