April 22, 1970
The first
Earth Day is celebrated.
1977
For the first time,
optical fiber is used to carry live telephone traffic.
1993
Version 1.0 of the
Mosaic web browser is released.
2008
The last
F-117 Nighthawk in service is retired.
Births
Immanuel Kant-1724; Vladimir Lenin-1870; Nicola Sacco-1891; Vladimir Nabokov-1899; J. Robert Oppenheimer-1904; Eddie Albert1906; Yehudi Menuhin-1916; Charles Mingus-1922; Bettie Page, Aaron Spelling-1923; Glen Campbell-1936; Jack Nicholson-1937; Steve Fossett-1944; John Waters-1946; Peter Frampton-1950; Paul Carrack-1951
Deaths
Henry Royce-1933; Earl Hines-1983; Ansel Adams-1984; Richard Nixon-1994; Erma Bombeck-1996; Linda Lovelace-2002; Pat Tillman-2004; Richie Havens-2013