Writer, historian, speaker, and vocal proponent of atheism. He served on the boards of both the San Francisco Atheists and the Committee for the Scientific Examination of Religion.
He studied history at California State University, Fresno and subsequently researched the historical accuracy of accounts of Jesus' life, eventually self-publishing a work entitled Nailed: Ten Christian Myths That Show Jesus Never Existed At All.
He established the Atheist Film Festival and an annual San Francisco event called Evolutionpalooza.
He was born and raised in Clovis, California.
He and scientist and author Richard Dawkins were both outspoken atheists.