Hillcrest retirement community hosts a free summit, “Flourishing in Challenging Times,” from 10 a.m. to 2 p.m. Thursday, April 9 at its meeting house, 2750 Mountain View Dr., La Verne. Ryan Harrison, Tatiana Shemiakina, Zachary Swanson and Claremont Graduate University professors Stewart Donaldson, Jeanne Nakamura and Saida Heshmati will speak on the science of well-being. The event also includes workshops and panel conversations organized by CGU’s Claremont Flourishing Center. Call (657) 279-4495 or visit livingathillcrest.org/events to RSVP.