John Green Jr., interpretive naturalist and photographer, will present a slide program at 7 p.m. Thursday, June 7, and 2 and 7 p.m. on Friday, June 8, at the Araxine Wilkins Sawyer Memorial, 371 Sawyer Road, Greene. His three-part presentation will consist of “Nature’s Will to Survive,” “Aquarius” and “Sights and Sounds.” Admission is free. Doors will open an hour before the show, and the auditorium is air-conditioned. For more information, call 946-5311 or visit www.ourworld.cs.com/sawyerfoundation.