1981 - The Morbidity and Mortality Weekly Report of the Centers for Disease Control and Prevention report that five homosexual men in Los Angeles, California have a rare form of pneumonia seen only in patients with weakened immune systems, in what turns out to be the first recognized cases…
1646 (O.S.) - Gottfried Wilhelm Leibniz, German philosopher and scientist
1781 - SimÃ©on-Denis Poisson, French mathematician and physicist
1791 - Robert Napier, British engineer
1805 - Charles Thomas Jackson, American scientist, polymath
1811 - Carlo Matteucci, Italian physicist
1904 - The Jovian moon Himalia is discovered by Charles Dillon Perrine.
1967 - A transplant team headed by Christiaan Barnard carries out the first heart transplant on a human (53-year-old Louis Washkansky).
1973 - Pioneer 10 sends back the first close-up images of Jupiter.
1999 - NASA loses…
1838 - Samuel Morse first successfully tests the electrical telegraph.
1714 - Percivall Pott, English physician
1795 - Anselme Payen, French chemist
1822 - Heinrich Schliemann, German archaeologist
1920 - John Maynard Smith, English biologist
1932 - Stuart A. Rice, American…