The Covington office of Better Hearing Atlanta is hosting a free seminar from 11 a.m. to 1 p.m., Nov. 30 at their office, 4165 Hospital Drive. An audiologist from Phonak, the hearing aid manufacturer, will explain the causes of hearing loss, including genetics and exposure to loud noises, said Marketing Coordinator Margaret Keating. Attendees will also be educated on how to prevent and treat hearing loss.