Newburgh The film “Forks Over Knives” examines the claim that most, if not all, of the so-called “diseases of affluence” that afflict people can be controlled, or even reversed, by rejecting animal-based and processed foods. The film will have three screenings at the Downing Film Center, 19 Front St., in Newburgh, starting July 31. The major story line traces the personal journeys of Dr. T. Colin Campbell, a nutritional scientist from Cornell University, and Dr. Caldwell Esselstyn, a former top surgeon at the Cleveland Clinic. “'Forks Over Knives’ is a film that may save your lives,” said critic Roger Ebert in his review of this documentary film. Screenings will take place on Sunday, July 31 at 5 p.m., Monday, Aug. 1 at 7:30 p.m., and Tuesday, Aug. 2 at 2 p.m. Regular admission prices will be in effect: general, $8.50, seniors and students, $7, members and children, $6. This film is rated PG. For more information and tickets, call 561-3686 or 800-974-8592, or visit www.downingfilmcenter.com.