‘Preventing HIV: Ethics, Activism and Promising New Strategies,’ an all-day series to mark National HIV Testing Day, will take place June 27 at the Center on Halsted, 3656 N. Halsted.

Susan Kingston, a meth expert from Seattle, will speak on ‘Crystal Meth Uncensored: What the DEA and the Gay Media Won’t Tell You.’ Other talks are scheduled throughout the day.

Seating is limited for the free event. RSVP at www.aidschicago.org/preventingHIV.