Journalist, screenwriter and author who has written films like Runaway Jury, The Ledge and Reaching for the Moon.
He is the great-great-grandson of Charles Darwin.
He co-founded ScienceDebate.org in 2007, a non-profit that aims to pressure political candidates into debating issues of science and technology.
He was married to Victoria Tennant from 1978 to 1982. He married Denise Dumont in 1989. They have a daughter, Anna Bella.