The Smithsonian Institution's National Museum of Natural History has withdrawn its co-sponsorship of a showing later this month of a film that supports the theory of "intelligent design." The museum said it would not cancel the screening of the film, "The Privileged Planet," but would return the $16,000 that the Discovery Institute, an organization that promotes a skeptical view of the Darwinian theory of evolution, had paid it. Proposals for events at the National Museum of Natural History are reviewed by members of the staff, and it shares sponsorship of all events. After the news of the showing caused controversy,...