Friday, April 20

Cedar Crest College Earth Day for elementary-aged children, 4 to 5:30 p.m. lawn in front of Lee’s Hall. 100 College Drive, Allentown.

Saturday, April 21

Downtown Bethlehem Association area clean-up, 8-11 a.m. Sun Inn Courtyard, 556 Main St. Historic District litter pick-up and planter clean-outs. Gloves, trash bags and safety equipment provided. Call 610-739-1175.

Earth Day service projects, 10 a.m.-3 p.m. Jacobsburg Environmental Education Center, 400 Belfast Road, Nazareth. Litter pick-up, garden clean-up, riparian buffer restoration. Wild edibles walk: 2 p.m. Bring work gloves. Lunch provided. Registration required: call 610-746-2801.

Fifth annual Craft Fair and Earth Day Festival, 11 a.m. to 4 p.m. Rain or shine. Kids’ area. St. Francis Center for Renewal, 395 Bridle Path Road. Host: Bethlehem Food Co-op. Visit: www.bethlehemfood.coop.

Annual Gettysburg Conservation Day and clean-up day, Civil War Round Table members and interested persons. CWRT- Eastern Pennsylvania, Lehigh Brigade. Call 610-253-4549, 610-882-9228 or 215-234-4884 or visit www.cwrteasternpa.org.

Sunday, April 22

Grand Central Sanitary Landfill’s Earth Day Festival, 11 a.m. to 2 p.m. Reptiles, recycling games, nature hike, butterflies, composting talk, GNC Waste Management Truck photo op, more. G.C. Environmental Education Center, 891 Grand Central Road, Pen Argyl. Visit www.facebook.com/ events/144301 896254228/.

In honor of Earth Day, register to donate with Miller-Keystone Blood Center on April 22 and 23 and receive a free plant (donation centers only) and free plant seeds (blood drives only) courtesy of Hickory Grove Greenhouses, North Catasauqua. Wear green, brown or blue while donating, take and share your photos, and tag Miller-Keystone Blood Center or use #YourBloodTheirHope on Twitter or Instagram. Visit https://www.giveapint.org/events/earth-day-2018/ or call 1- 800- B-A-Donor (1-800-223-6667).

Reduce, Reuse, Recycle presentation by Dr. Jonas Baltrusaitis of Lehigh University, 10 a.m. Nitschmann Hall, Central Moravian Church Christian Education Building, 40 W. Church St. Call 610- 866-5661 or visit www.centralmoravianchurch.org/upcoming-events/