For most Americans, Earth Day is probably something you vaguely remember from elementary school. You may have sat through a lesson on reducing, reusing, and recycling, or made a poster with a frowny-faced Earth in art class. If your school was really ambitious, you might have had a bake sale and donated the proceeds to Save the Whales or Save the Rainforests. (My school was not particularly ambitious, so we’d usually watch Free Willy and call it a day.)
As an adult, you probably celebrate Earth Day the way you celebrate Flag Day: You don’t.