LSD, which was originally synthesized by a Swiss doctor and was later secretly used by the CIA on military personnel, prostitutes, the mentally ill, and members of the general public in a project code named MKULTRA, is designated a controlled substance in the United States.

A six month strike by Hollywood set decorators becomes a riot at the gates of Warner Brothers Studios when strikers and replacement workers clash. The event helps bring about the passage of the Taft-Hartley Act, which, among other things, prohibits unions from contributing to political campaigns and requires union leaders to affirm they are not supporters of the Communist Party.

The Soviet Union launches the satellite Sputnik I, which becomes the first artificial object to orbit the Earth. It orbits for two months and provides valuable information about the density of the upper atmosphere. It also panics the United States into a space race that eventually culminates in the U.S. moon landing.

American blues singer Janis Joplin is found dead on the floor of her motel room in Los Angeles. The cause of death is determined to be an overdose of heroin, possibly combined with the effects of alcohol.