“After grilling Smithsonian Secretary Lawrence M. Small yesterday about the changes to a photography exhibit on the Arctic National Wildlife Refuge, a Senate panel asked the Smithsonian to clarify its policy on exhibition captions. The controversy… started last month when the National Museum of Natural History acknowledged that it had moved a show of photographs by Subhankar Banerjee and also had changed the captions because they contained language that advocated no oil drilling in the refuge.”