• Raccoon Creek State Park in Beaver County will have a winter camp and hike Dec. 6-7. Hikers will depart at 6 p.m. Dec. 6, hike for two to three hours, set up camp, stay the night and return by noon the next day. Snowshoes will be provided if there’s snow, but hikers must have their own equipment, food and water. It’s free, but space is limited and preregistration is required by calling 724-899-3611.
• Audubon Society of Western Pennsylvania will have a Geminid meteor hike at 7:30 p.m. Dec. 13 at Succop Nature Park in Butler County. Cost $6 for members, $10 for nonmembers. Call 412-963-6100.
• Westminster College in Lawrence County will have a student symposium on the environment from 5:30-9 p.m. Dec. 4 at the school’s McKelvey Campus Center. Free and open to the public, it gives students from a number of area colleges and universities a chance to present their research, projects and creative works on the environment. Contact Helen Boylan at 724-946-6293 or firstname.lastname@example.org for information.
• Jennings Environmental Education center in Butler County will have a program for homeschooling families on how to get involved in BirdSleuth and Project FeederWatch from 9 a.m.-noon Dec. 3. It’s designed for children ages 5 and older. BirdSleuth and Project FeederWatch are opportunities for those seeking a curriculum related to birds and a winter-long commitment to a bird-related citizen science project. Cost is $3 per person or $12 per family. Enrollment is limited, and registration is required by Wednesday by calling 724-794-6011.
• Venture Outdoors will have a free snowshoeing workshop from 7-8:30 p.m. Dec. 11 at REI, Southside Works, in Pittsburgh. This is an introductory class focusing on what gear is needed, techniques and places to snowshoe. Call 412-255-0564.
• World-class fly tier Kieran Frye and two of his friends, George Mizikar and John Albright, will give a tying presentation at the Dec. 8 meeting of the Tri-County Trout Club. It will be in Fisher Hall at Burrell Lake Park. Doors open at 7 p.m., and admission is free for members and children younger than 12; all other pay $3. Refreshments will be available for purchase.
• Ken Sink Chapter of Trout Unlimited will offer an eight-week fly tying class starting Jan. 3 at Trinity United Methodist Church, 398 Church St., Indiana. Open to those ages 11 and older, it will meet from 10 a.m.-12:30 p.m. Saturdays. It is meant for those new to the hobby or with limited skills. Participants will learn basic fly tying techniques and produce flies commonly used on western Pennsylvania waters. The program is free to those ages 11-16; those older pay $30. Instructional and tying materials will be provided, but participants must bring their own tools, including thread. Information and registration packets are available at The Indiana Angler, 218 Grandview Ave., Indiana. That shop will offer a discount on fly tying tools and materials for class participants. Space for the class is limited and payment is due at registration. Call 724-463-2011 for information.