I didn't go to the Museum of Science and Industry, but I recently went to the Shedd Aquarium, Adler Planetarium and the Field Museum in Chicago, the Detroit Institute of Art and Museum of Modern Art, The Metropolitan Museum of Art, the Museum of Natural History and NY Aquarium in NYC. All of them allowed photography, though some exhibits were explicitly marked otherwise. Many of them even allowed flash, although I'd ask before using it. None of them allowed tripods. Monopods are a flip of the coin, since many of the employees will automatically assume it's a tripod and tell you it's not permitted.


