CONFERENCE: Citizen Science Association Conference, Saint Paul, Minnesota, U.S.A., 17–20th May 2017
The second biennial Citizen Science Association Conference was held from the 17–20th of May 2017 in Saint Paul, Minnesota. The conference is the biggest of its kind in the world and brought together more than 1,000 delegates for hundreds of conference presentations as well as workshops, panels, screenings, a hackathon and a citizen science festival. In this paper we review the history of the conference and outline the key events leading up to the 2017 conference.