Evolutionary biologist Lynn Margulis dies in Mass.
AMHERST, Mass.—Evolutionary biologist, author and National Medal of Science winner Lynn Margulis has died.
According to a statement from the University of Massachusetts where she was a professor of geosciences, Margulis died at her home on Tuesday. She was 73.
Margulis was best known for her theory of symbiogenesis, which challenges Neo-Darwinism by arguing that inherited variation does not come from random mutations but long-lasting interaction between organisms.
She was also a strong proponent of the Gaia hypothesis that the earth acts as a living organism.
She was elected to the National Academy of Sciences in 1983 and received the National Medal of Science in 1999.
She was born in Chicago and enrolled at the University of Chicago when she was 14.
She was once married to astronomer Carl Sagan.