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MAY 21

1736 Francis Egerton (Duke of Bridgwater Who Pioneered Britain's Canal System) English Scientists & Mathematicians Canals Historic UK
1850 Gustav Lindenthal (Austrian-American Civil Engineer) Austrian Scientists & Mathematicians Bridges
Giuseppe Mercalli (Italian Volcanologist, Seismologist. Inventor of the Mercalli Intensity Scale) Italian Scientists & Mathematicians Earthquakes USGS
1860 Willem Einthoven (Dutch Physiologist, Developer of the Electrocardiograph Awarded the 1924 Nobel Prize for Physiology or Medicine) Dutch Scientists & Mathematicians Human Anatomy & Physiology The Heart 1924 Nobel Laureate for Physiology or Medicine Biography.com
1867 Frances Densmore (Minnesota-born Ethnologist) Frances Densmore
1878 Glenn Curtiss (New York-born Aviation Pioneer) Glenn Curtiss Aviation
1921 Andrei Sakharov (Russian Physicist, Human Rights Activist Award the 1975 Nobel Prize for Peace) Andrei Sakharov Soviet Union Physics Human Rights/Civil Rights Cold War 1975 Nobel Laureate for Peace
1934 Bengt I. Samuelsson (Swedish Physiologist Awarded the 1982 Nobel Prize for Physiology or Medicine) Swedish Scientists Human Anatomy 1982 Nobel Laureate for Physiology or Medicine
Deaths
Persons of Historic Significance Who Have Died on This Date
1986 Helen Brooke Taussig (Massachusetts-born Physician, Founder of Pediatric Cardiology ) Helen Brooke Taussig Medical Research Children's Health Care Cardiology
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1372 An Earthquake Levels Churches in England British History Earthquakes English Cathedrals Chambers Book of Days
1894 Queen Victoria Officially Opens England's Manchester Ship Canal England Queen Victoria Canals Manchester Ship Canal Historic UK
1927 Charles Lindbergh Lands in Paris Completing the First Solo Transatlantic Flight Paris Charles Lindbergh Aviation Historic Firsts CharlesLindbergh.com Center for the Study of Technology & Society Writer's Almanac History Channel New York Times
1932 Amelia Earhart Lands in Ireland Completing First Female Solo Transatlantic Flight Ireland Amelia Earhart Aviation Historic Firsts National Postal Museum Center for the Study of Technology & Society History Channel
1936 President Franklin Roosevelt Signs the Rural Electrification Act President Franklin Roosevelt Electricity Historic U.S. Documents University of Georgia
1950 Lightning Kills Two and Tornado Creates Heavy Property Damage Near London London, England Tornado Death BBC
6.0 Magnitude Earthquake Kills 83, Injures 200 in Central Peru Peru Earthquake Death USGS
1956 The United States Explodes the First Airborne Hydrogen Bomb over Bikini Atoll in the Pacific Nuclear Weapons Aviation Military History Historic Firsts New York Times
1960 7.9 Magnitude Earthquake Is First in Two Days to Kill 5,000 in Chile Chile Earthquake Death History Channel USGS
1964 Baltimore Light Is Activated as the First Nuclear-Powered Lighthouse Baltimore, Maryland Lighthouses Nuclear Power Historic Firsts Center for the Study of Technology & Society
1968 U.S. Nuclear Submarine, Scorpion Sinks in the Atlantic: 99 die Naval Military History Nuclear Weapons New York Times
1985 Tony Feltch of Wisconsin Sets the World Record for the Longest Distance Flown by a Paper Airplane: 193' Wisconsin Aviation Wisconsin Historical Society
1997 5.8 Magnitude Earthquake Kills 38, Injures 1,000, Leaves Thousands Homeless in India India Earthquake Death USGS
2000 President Garfield's Spine Goes on Display at the National Museum of Health and Medicine in Washington, D.C. Washington, D.C. Assassination of President Garfield American Presidents Human Skeleton National Museum of Health and Medicine History Channel
2003 6.7 Magnitude Earthquake Hits Algeria: 1,000+ die Algeria Earthquakes Death USGS

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