1993 - CanadiansprinterBen Johnson[?] is banned from international competition for life after testing positive for banned substances for the second time.
1998 - NASA announced that that the Clementine spaceprobe orbiting the moon had found enough water in polar craters to support a human colony and rocket fueling station.
... in Korea retreat toward Manchuria followed by 100,000 Japanese troops.
April 30 - Louisiana Purchase Exposition World's Fair opens in Saint Louis, Missouri (closes ...