Nederland’s Wild Bear Center (20 Lakeview Dr., Unit 106) celebrates Earth Day with its 16th annual FREE Wild Earth Weekend (Saturday, April 22 and Sunday, April 23) packed with entertainment and lots of hands-on activities. Engage in experiential activities with masters in the field of environment education, as well as enjoy performances and presentations — all from noon to 5 p.m. each day. Families are encouraged to delve into activities to learn about bees, plants, climate, energy and more. Kids can visit with live raptors, meet “Super Natural” with Playground Theatre, learn from climate scientists, plants seeds, sing songs, learn about bees and create something with hand-crafters. Attendees are encouraged to bike, carpool or take the RTD bus from Boulder (which stops right near the center.) For questions, call the Center at 303-258-0495.