Celebrate Earth Day. 10 a.m. The Friends of the Woodlawn Preserve, Capital/Mohawk PRISM and NYFOA CDC are hosting a Woodswalk in Schenectady’s Pine Barrens Preserve. Meet at information kiosk at the end of Gifford Rd. (600 block), 1 mile south of State St. near the Schenectady/Niskayuna line.