Jennings Environmental Education Center, Route 528 near the intersection of Routes 8 and 173, Slippery Rock, will host a winter trails day on Saturday and snowshoeing for beginners on snowy Saturdays. Registration is required by calling 724-794-6011.

<B>Powdermill Nature Reserve</B> at 1847 Route 381 in Rector, Westmoreland County, the biological research station of Carnegie Museum of Natural History, is the site of a winter nature hike at 1 p.m. Saturday and Jan. 16, 23 and 30. Admission is free; no registration required. Call 724-593-6105.