An editorial from The Washington Post
At the Smithsonian National Museum of Natural History, visitors can go on an adventure through the Amazon. They can walk the purple mountain majesties of America’s national parks, and they can even travel back to the Cretaceous period and see dinosaurs come to life. That’s all thanks to the museum’s Samuel C. Johnson Imax Theater. On Oct. 1, after 18 years, it will all shut down.