Scientific American (informally abbreviated to SciAm) is a popular science magazine published since August 28, 1845, which according to the magazine makes it the oldest continuously published magazine in the United States. It brings articles about new and innovative research to the amateur and lay audience. Scientific American had a worldwide monthly circulation of roughly 733,000 as of December 2008, including newsstand sales of over 100,000 It is not a refereed scientific journal, such as Nature; rather, it is a forum where scientific theories and discoveries are explained to a broader audience.

 

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