Become a digitalPLUS subscriber. 99¢ for 4 weeks.

Earth Day Celebration

Earth DayNational Aquarium Baltimore
Take part in Earth-friendly activities and learn how being green can help the animals in the aquarium. 10 a.m.-3 p.m. April 19-20. The National Aquarium in Baltimore, 501 E. Pratt St. Free with aquarium admission ($21.95-$34.95; children under 3 are free). Barbara Haddock Taylor, Baltimore Sun photo