1998: First flight of RQ-4 Global Hawk, the first unmanned aerial vehicle certified to file its own flight plans and fly regularly in U.S. civilian airspace.
1997: GRB 970228, a highly luminous flash of gamma rays, strikes the Earth for 80 seconds, providing early evidence that gamma-ray bursts occur well beyond the Milky Way.
1997: An earthquake in northern Iran is responsible for about 3,000 deaths.
1959: Discoverer 1, an American spy satellite that is the first object intended to achieve a polar orbit, is launched but fails to achieve orbit.
1958: A school bus in Floyd County, Kentucky hits a wrecker truck and plunges down an embankment into the rain-swollen Levisa Fork river. The driver and 26 children die in what remains one of the worst school bus accidents in U.S. history.
1954: The first color television sets using the NTSC standard are offered for sale to the general public.
1948: Christiansborg Cross-Roads shooting in the Gold Coast, when a British police officer opens fire on a march of ex-servicemen, killing three of them and sparking major riots and looting in Accra.
1947: February 28 Incident: In Taiwan, civil disorder is put down with the loss of an estimated 30,000 civilians.
1942: The heavy cruiser USS Houston is sunk in the Battle of Sunda Strait with 693 crew members killed, along with HMAS Perth which lost 375 men.
1940: Basketball is televised for the first time (Fordham University vs. the University of Pittsburgh in Madison Square Garden).
1939: The erroneous word "dord" is discovered in the Webster's New International Dictionary, Second Edition, prompting an investigation.
1897: Queen Ranavalona III, the last monarch of Madagascar, is deposed by a French military force.
1893: The USS Indiana, the lead ship of her class and the first battleship in the United States Navy comparable to foreign battleships of the time, is launched.
1885: The American Telephone and Telegraph Company is incorporated in New York as the subsidiary of American Bell Telephone. (American Bell would later merge with its subsidiary.)
1874: One of the longest cases ever heard in an English court ends when the defendant is convicted of perjury for attempting to assume the identity of the heir to the Tichborne baronetcy.
1867: Seventy years of Holy See-United States relations are ended by a Congressional ban on federal funding of diplomatic envoys to the Vatican and are not restored until January 10, 1984.
1849: Regular steamboat service from the west to the east coast of the United States begins with the arrival of the SS California in San Francisco Bay, four months 22 days after leaving New York Harbor.
1827: The Baltimore and Ohio Railroad is incorporated, becoming the first railroad in America offering commercial transportation of both people and freight.
1710: Battle of Helsingborg: 14,000 Danish invaders under Jørgen Rantzau are decisively defeated by an equally sized Swedish force under Magnus Stenbock. This is the last time Swedish and Danish troops meet on Swedish soil.