Glen David Brin, Ph.D. (born October 6, 1950) is an American scientist and award-winning author of science fiction. He has received the Hugo, Locus, Campbell and Nebula Awards.
From Wikipedia article.

Glen David Brin, Ph.D. (born October 6, 1950) is an American scientist and award-winning author of science fiction. He has received the Hugo, Locus, Campbell and Nebula Awards.