The U.S. Senate Watergate Committee began its hearings on this day 1973. Senator Sam Ervin (below) opened the first public hearing on Presidential Campaign Activities, commonly known as Watergate.
Richard Nixon leaves the White House following his resignation over the Watergate scandal.
On this day in 1954, the U.S. Senate voted to condemn Sen. Joseph R. McCarthy for what it called "conduct that tends to bring the Senate into dishonor and disrepute." The censure was related to McCarthy’s controversial investigation of suspected communists in the U.S. government, military and civilian society.
A self-sustaining nuclear chain reaction was demonstrated by Dr. Enrico Fermi and his staff at the University of Chicago on this day in 1942. The above illustration shows scientists watching the first sustained fission chain reaction.