More Notable Events on February 18: 1988 Anthony M. Kennedy, sworn in as Supreme Court Justice 1979 Snow falls in Sahara Desert 1978 1st Iron Man Triathlon held, Kona, Hawaii 1930 U.S. astronomer Clyde Tombaugh discovers Pluto 1896 Cave of Winds at Niagara Falls goes almost dry for 1st time in 50 yrs