(DC) (Smithsonian) Join the National Portrait Gallery and American Art Museum to celebrate Earth Day! Enjoy musical performances, gallery talks, and craft workshops while you learn about the art and science of environmentalism. Attendees of all ages can enjoy nature-themed activities and children 12 and under can have their faces painted. A scavenger hunt in the galleries features works from both museums that highlight the natural wonders of earth and the various ways artists contribute to the care of our planet.