Category:Scientific American - Series 2
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Scientific American is a popular-science magazine, published (first weekly and later monthly) since August 28, 1845, making it the oldest continuously published magazine in the United States. Second series began on July 2, 1859 as a weekly and continued thus until 1921 when it merged with Scientific American Monthly, and continued as a monthly from November 1921 until the present.
Subcategories
This category has the following 4 subcategories, out of 4 total.