Boston area Earth Day events
Float, fly, and roll your way through fun experiences at the Ecotarium as you learn how things move across air, land, and water. Join in an Earth Day Festival celebration April 20 when admission will be half price.
10 a.m. to 4 p.m., $14 for adults; $8 for 18 and under, children under 2 free; EcoTarium, 222 Harrington Way, Worcester. 508-929-2701. www.ecotarium.org