Spring is a great time to connect with parks and nature. Volunteer or celebrate for Earth Day (mostly Apr. 20) — see the list of events here! Document and learn about local plants and animals as part of City Nature Challenge (Apr. 26 – May 3). All ages can celebrate and learn about the Berkeley’s Bay Festival Apr. 27! Enjoy varied walks and more at the annual Hillside Festival in El Cerrito’s Hillside Natural Area May 4-5.