BRADY TWP — Families can become tree detectives from 2 to 4 p.m. Sept. 15 at Jennings Environmental Education Center, 2951 Prospect Road.

Are the trees at Jennings in trouble? Collect clues in hopes of figuring out what is affecting the trees at the park and how they are being impacted. Family teams will investigate “troubled areas” to determine the suspects at each location.

Jennings' Nature Detectives programs are designed for families with children aged 6 and older. Children should be accompanied by a parent or other adult. Participants should dress appropriately and prepare for an active, outdoor learning adventure. Pre-registration is required by Sept 12, and space is limited. Register at http://events.dcnr.pa.gov/ or by calling 724-794-6011.

BRADY TWP — Jennings Environmental Education Center, 2951 Prospect Road, is looking for interested individuals willing to spend a fall day pitching in at the park to celebrate National Public Lands Day from 9 a.m. to 1 p.m. Sept. 28.Participants must be age 12 or older and must register for the program by contacting the center at 724-794-6011 or registering online at events.dcnr.pa.gov no later than Sept. 25.Trail construction and rehabilitation will be the focus of the day at Jennings.

EVANS CITY — There will be a preschool open house from 10 a.m. to noon Wednesday at Westminster United Presbyterian Church, 330 E. Main St.For more information, call 724-679-0935.