Keay Davidson has been a science writer for newspapers since 1979: the San Francisco Chronicle (2000-present), the San Francisco Examiner (1986-2000), the Los Angeles Times San Diego bureau (1981-85), and the Orlando, Fla. Sentinel Star (1979-1981). He has written three books, most recently the first biography of Carl Sagan, and is finishing a biography of Thomas S. Kuhn. Also, he has won the AAAS and NASW science journalism awards, and has written for numerous magazines such as Scientific American, New Scientist and National Geographic.