Wonderfest is a nonprofit corporation founded in California dedicated to informal science education.
From 1998 to 2010, Wonderfest produced annual science festivals — the first such community-wide event in the United States — that presented a series of expert dialogues, based on topics of scientific controversy.
Wonderfest, subtitled "The Bay Area Beacon of Science," is dedicated to the memory of Carl Sagan.
From 2002 through 2010, and 2015-present, Wonderfest awarded the $5,000 Carl Sagan Prize for Science Popularization.
[1] Wonderfest's founding director is Tucker Hiatt, a physics teacher and a former Stanford Visiting Scholar.