Portal:History of science/Selected anniversaries/July 1

July 1:

 * 1646 - Birth of Gottfried Leibniz, German mathematician (d. 1716)
 * 1742 - Birth of Georg Christoph Lichtenberg, German physicist (d. 1799)
 * 1788 - Birth of Jean-Victor Poncelet, French mathematician (d. 1867)
 * 1858 - The joint reading of Charles Darwin and Alfred Russel Wallace's papers on evolution to the Linnean Society
 * 1906 - Birth of Jean Dieudonné, French mathematician (d. 1992)
 * 1929 - Birth of Gerald Edelman, American biologist, Nobel laureate
 * 1941 - Birth of Alfred G. Gilman, American scientist, Nobel laureate
 * 1957 - The International Geophysical Year begins (until December 31, 1958)
 * 1968 - The Nuclear non-proliferation treaty is signed in Washington, London and Moscow by sixty-two countries
 * 1971 - Death of Lawrence Bragg, English physicist, Nobel Prize laureate (b. 1890)
 * 2001 - Death of Nikolay Basov, Russian physicist, Nobel Prize laureate (b. 1922)
 * 2004 - Saturn orbit insertion of Cassini–Huygens begins at 01:12 UTC and ends at 02:48 UTC