1938

The radio play “The War of the Worlds,” starring Orson Welles, aired on CBS.

1961

The Soviet Union tested a hydrogen bomb, the “Tsar Bomba,” with a force estimated at about 50 megatons (over 3,500 times that of the atomic bomb dropped on Hiroshima, Japan).

1974

Muhammad Ali knocked out George Foreman in the eighth round of a 15-round bout known as the “Rumble in the Jungle,” to regain his world heavyweight title.