In celebration of World Walrus Day, National Museum of Natural History director Kirk Johnson talks about his new documentary on the saber-toothed seals Jack Tamisiea As a paleobotanist, Kirk Johnson’s ...
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12 most visited museums in Washington, DC, ranked
The capital of the U.S. is filled with museums -- many of them free to visit as they're part of the Smithsonian. It's no wonder these places are so popular.
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