If you're in Boston this weekend, you should visit the Boston Public Library's Civil War exhibits. While several exhibits will be open only during weekday business hours, the Torn in Two: The 150th Anniversary of the Civil War exhibit is fantastic. There's also a really good exhibit of Homer Winslow Civil War era prints, largely done for newspapers (9am - 5pm, Mon., Wed., and Fri.; 9am - 7pm Tues. and Thurs.).
Both are superb.
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...make sure you check out the Darwin exhibit and the ant exhibit at the National Museum of Natural History.
One of the things that has puzzled me about natural history/science museums are the mineralogy exhibits. They really don't seem to be about anything other than "OOH! SHINY PEBBLE!" Mind you, they often have some very cool and shiny pebbles, but contrast them to paleontology exhibits.
The Science Museum of Minnesota recently developed an exhibit called "
One of the cool perks of being a scienceblogger and going to a meetup this year was the opportunity to go and see the Horse Exhibit at the American Museum of Natural His