Return Today in the History of  Science, Math, Invention & Technology Return

APRIL 21

1838 John Muir (Scottish-born American Naturalist and Conservationist) John Muir Earth and the Environment
1864 Max Weber (German Sociologist and Economist) German Scientists & Mathematicians Economists
1943 Thomas McMahon (Ohio-born Scientist and Fiction Writer) Thomas McMahon Physics Physiology
Deaths
Persons of Historic Significance Who Have Died on This Date
1946 John Maynard Keynes (British Economist) British Scientists & Mathematicians Economics History Channel
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1860 Josiah Whitney Is Appointed State Geologist for California California Scientists & Mathematicians Massachusetts Scientists & Mathematicians Geology LearnCalifornia
1959 16'10" 2,664 lb. White Shark Is Largest Fish Ever Caught with a Rod and Reel Australia Sharks MSNBC
1967 General Motors Manufactures Its 100 Millionth Vehicle At Its Factory in Janesville. Wisconsin Janesville. Wisconsin Automotives General Motors Wisconsin Historical Society
1995 7.3 Magnitude Earthquake Is Centered on Samar, the Republic of the Philippines Republic of the Philippines Earthquake USGS
1997 The Red River Rises to 26.2' Above Flood Stage, Causing $1B+ Damage and Displacing 47,000 of the 50,000 Residents of Grand Forks, North Dakota and East Grand Forks, Minnesota Grand Forks, North Dakota East Grand Forks, Minnesota Rivers Flooding Economics Minnesota Historical Society
Ashes of 24 Space Pioneers and Enthusiasts Are Sent into Orbit Gene Roddenberry Space Notable Persons Who Have Died on This Date Celestis

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