Events
1921 - Researchers at the University of Toronto led by biochemist Frederick Banting announce the discovery of the hormone insulin.
Births
1733 - Jeremiah Dixon, English surveyor and astronomer
1833 - Thomas George Bonney, English geologist
1848 - Loránd Eötvös, Hungarian physicist
1881 - Hans Fischer, German chemist, Nobel laureate
Deaths
1844 - John Dalton, English physicist and chemist
1917 - Emil Theodor Kocher, Swiss surgeon, Nobel laureate
1931 - Auguste-Henri Forel, Swiss entomologist
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Births
1541 - Michele Mercati, Italian physician
1818 - August Wilhelm von Hofmann, German chemist
1865 - Charles W. Woodworth, American entomologist
1869 - Harvey Cushing, American neurosurgeon
1911 - Melvin Calvin, American chemist, Nobel Prize laureate for discovering the Calvin Cycle (see…
Events
1609 - Galileo Galilei demonstrates his first telescope to Venetian lawmakers.
1894 - Shibasaburo Kitasato discovers the infectious agent of the bubonic plague and publishes his findings in The Lancet.
1981 - Voyager 2 spacecraft makes its closest approach to Saturn
1989 - Voyager 2…
Events
1804 - Juno, one of the largest main belt asteroids, was discovered by Karl Ludwig Harding.
1914 - The last passenger pigeon, a female named Martha, dies in captivity in the Cincinnati Zoo.
1979 - The American space probe Pioneer 11 becomes the first spacecraft to visit Saturn when it passes…
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Events
1882 - Robert Koch announces the discovery of the bacterium responsible for tuberculosis (mycobacterium tuberculosis; seen above
in culture).
1965 - Ranger 9, equipped to convert its signals into a form suitable for showing on domestic television, brings images of the…