(MD) (Montgomery Parks) Celebrate Earth Day at Brookside with activities and performances entirely geared toward families. Little ones can try out being a naturalist and learn how to pot a plant — and take said potted plant home, while supplies last. Watch live science experiments with the Science Guys of Baltimore during the first half of the event, and then a set from children’s music band L-M-N-O-People. Join the Science Guys to make science fun, cool, and easy with bubbling potions, chemical reactions, and explosions!  Explore the science and art of sustainability through child-driven projects, plantings, and crafts.