Cofounders Jack Dorsey, Evan Williams, and Biz Stone publicly launched their online microblogging service…
Iranian mathematician Maryam Mirzakhani—the first woman and first Iranian to be awarded a Fields…
French revolutionary Jean-Paul Marat assassinated On this day in 1793, Jean-Paul Marat, a leader…
Geraldine Ferraro designated running mate of Walter Mondale Democratic presidential candidate Walter F. Mondale…
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