This year’s Environmental Film Festival features 150 films about the natural world, most of which are free to attend at 60 locations in the area. A couple of highlights: “Smart Creatures” is a lineup of six animated shorts for children, including one narrated by SpongeBob SquarePants. (Four District libraries — Martin Luther King Jr., Northwest One, Southwest and Anacostia — will show “Smart Creatures” during the festival, which runs March 15-27.) The documentary “Creating Synthetic Life” was filmed over seven years in the laboratory of J. Craig Venter, the geneticist who announced that his lab had created the first synthetic cell last May. It plays at 3:15 p.m. on March 20 at the National Museum of Natural History and will be followed by a discussion with the film’s director, David Conover. See www.dcenvironmental
filmfest.org for the full schedule.