Just over a century ago, a virulent flu outbreak was wreaking havoc on the world. We know it now as the 1918 influenza pandemic, and its tremors were felt far and wide. By the end of its spread, tens ...
An international team of climate researchers and scientists affiliated with institutions like Harvard, the University of Maine, and the University of Nottingham have uncovered evidence of a six-year ...
A version of this story appears in the September 2020 issue of National Geographic magazine. Philadelphia detected its first case of a deadly, fast-spreading strain of influenza on September 17, 1918.
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