Boston area Earth Day events
The Guinness World Record for the largest global picnic is on the line. Help break the record by breaking bread from noon-3 p.m., and celebrate Earth Day with local vendors, family-friendly activities, and a nature treasure hunt.
April 22 from 11 a.m.-5 p.m., rain or shine. Free. Boston Common Frog Pond. www.nature.org/bostonpicnic