Bear, Greg
From The Transhumanist Wiki
From the SL4 Lexicon:
Bear, Greg:
Famous "hard" (physically realistic) science fiction writer. Author of more than 30 books in the genres of science fiction and fantasy. Most recently, Bear has been writing novels about human evolution. His most famous works include "Darwin's Radio", "Blood Music", and "Slant". Website: http://www.gregbear.com.