Close of Business is a new video series that we're trying out. The idea is simple: at 5 p.m. (or thereabouts), we post a quick video summarizing the top three news stories of the day -- and give you one new Twitter or Tumblr to follow. Some of them we'll have written about; others will just be what people were talking about on the Internet.
Your Twitter account of the day: @amhistorymuseum, the American History Museum.
See more video from The Atlantic Technology Channel.
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