Earth Day may officially be Sunday, but local groups are ushering in the environmentally conscious holiday a bit early. Elachee Nature Science Center, 2125 Elachee Drive in Gainesville, is getting the party started tonight with a 7 p.m. screening of "Mother Nature’s Child." According to event organizers, the movie "explores the essential ways direct contact with the natural world promotes children’s health and well-being, contributes to the future of the planet and nourishes the human spirit."