Jennings Environmental Education Center, Route 528, Brady Township, hosts a program on the threats to forests by insects and diseases from other continents at 7 p.m. Monday and “Honey Heroes” at 2 p.m. Sept. 20. Reservations are being accepted for Slippery Rock Watershed Coalition 20th anniversary celebration and kayak sojourn from 9 a.m. to 2 p.m. Oct. 10; “Introduction to Backpacking for Women,” an all-inclusive guided overnight trip on North Country Trail, from 9 a.m. Oct. 17 to 1 p.m. Oct. 18; National Public Lands Day volunteer event, 9 a.m. to 1 p.m. Sept. 26; and Scout Stewards: National Public Lands Day for Scouts, 9 a.m. to noon Sept. 27. Call 724-794-6011.

Moraine State Park, Muddy Creek Township, will host Muddy Creek oil well demonstrations from 11 a.m. to 5 p.m. Saturday. The central powerhouse site is beyond the State Parks Region 2 office, 195 Park Road, Prospect (Old 422 off Route 528). A program about butterflies called “Bring Back the Monarchs” will be from 1 to 2:30 p.m. Saturday at pavilion 7 at the McDanel's Launch area on the North Shore. A Hilltop Trail hike is planned for 9 a.m. to noon Sunday starting from the park office on the South Shore. Registration is needed for a kayak program at 1:30 p.m. Sunday. Call 724-368-8811.

Succop Nature Park, 185 W. Airport Road, Penn Township, has trails open from dawn to dusk. Visit www.aswp.org.

A star party sponsored by the Amateur Astronomers Association of Pittsburgh is to begin, weather permitting, at 7:25 p.m. Sept. 19 at the Nicholas E. Wagman Observatory in Deer Lakes Regional Park near Russellton. Call 724-224-2510.McConnells Mill State Park in Slippery Rock Township, Lawrence County, off Route 422, will have an Alpha Pass Trail hike at 10 a.m. Sept. 19. The McConnells Mill Heritage Festival will be from 10 a.m. to 6 p.m. Sept. 26 and 11 a.m. to 5 p.m. Sept. 27. Admission is free. Call 724 368-8811.