For the first time since Washington DC’s Air and Space Museum opened in 1976, the museum is not the most popular museum ticket in town. In the battle of Smithsonians, Natural History is winning. “In the first four months of 2000, 2.3‚million people visited Air and Space. In the same span, 2.8‚million have gone through Natural History. Last month 1‚million visitors walked through Air and Space, compared with 1.3‚million at Natural History.” – Washington Post