Ask a Scientist is an informative, entertaining, casual lecture series, held at a San Francisco café. Since 2003 we've been bringing together local researchers and inquisitive audiences for lively discussions about a broad range of scientific topics. No tests, grades, or pressure — just food, drinks, socializing, and conversation about the universe’s most fascinating mysteries. Ask a Scientist is a volunteer-run program. Our guest speakers generously donate their time and expertise, and all events are free to the public.