1923 - Insulin first became generally available for use by diabetics.
1452 - Leonardo da Vinci, Italian Renaissance polymath (above)
1552 - Pietro Cataldi, Italian mathematician
1641 - Robert Sibbald, Scottish physician
1707 - Leonhard Euler, Swiss mathematician
1710 - William…
1958 - Explorer program: Explorer I - The first successful launch of an American satellite into orbit.
1958 - James Van Allen discovers the Van Allen radiation belt.
1961 - Project Mercury: Mercury-Redstone 2 - Ham the Chimp becomes the first hominid in outer space.
1868 - Theodore…
1925 - John T. Scopes is indicted for teaching human evolution.
1961 - Apollo program: U.S. president John F. Kennedy announces before a special joint session of Congress his goal to initiate a project to put a "man on the moon" before the end of the decade.
1860 - James McKeen…
1765 - Sylvestre François Lacroix, French mathematician
1868 - Georgy Voronoy, Russian mathematician
1900 - Jan Oort, Dutch astronomer
1906 - Kurt Gödel, Austrian mathematician
1928 - Eugene M. Shoemaker, American astronomer
1941 - K. Barry Sharpless, American chemist, Nobel laureate…