Holy Trinity Church (Cambridge, MA) invites the community to “Vaping 101: A Seminar for Parents,” an informative and educational session designed to help parents learn more about the dangerous epidemic of teen vaping. Sunday, Apr. 7, 12:30-2 p.m., at the church (145 Brattle St., Cambridge). Presenters include Carlene Newell, Health Educator/Tobacco Specialist; Karen Koretsky, Arlington Youth Health and Safety Coalition; and Cindy Sheridan Curran, Arlington High School Truancy Officer. Sponsored by the Holy Trinity Parent Partnership. Admission is free; light refreshments served. RSVP (suggested but not required) by Apr. 5 to youth@htaac.org. For information, log onto the parish website.