Holy Trinity Church of Cambridge, MA, will present a talk by Susan Osman–longtime BBC TV anchor, radio host, author, and screenwriter–on Sunday, Sep. 30, at 12:15 p.m., in the church’s Charles and Nevart Talanian Cultural Hall (145 Brattle St., Cambridge). Ms. Osman’s talk titled “I Heard God Laughing” is free and open to the public. For information, call the church office at (617) 354 -0632, e-mail office@htaac.org, or click to the parish website.