A group of CIA financed and trained Cuban refugees lands at the Bay of Pigs in southern Cuba with the aim of ousting Fidel Castro. However, the invasion fails badly and the result is embarrassment for U.S. president John F. Kennedy and a major boost in popularity for Fidel Castro, and also has the effect of pushing him toward the Soviet Union for protection.

Swiss scientist Albert Hofmann, while working at Sandoz Laboratories in Basel, accidentally absorbs lysergic acid diethylamide, better known as LSD, and thus discovers its psychedelic properties. He had first synthesized the substance five years earlier but hadn’t been aware of its effects. He goes on to write scores of articles and books about his creation.

Two and a half hours after striking an iceberg in the North Atlantic Ocean on its maiden voyage, the British passenger liner RMS Titanic sinks, dragging 1,517 people to their deaths. The number of dead amount to more than fifty percent of the passengers, due mainly to the fact the liner was not equipped with enough lifeboats.

African-American baseball player Jackie Robinson officially breaks Major League Baseball’s color line when he debuts for the Brooklyn Dodgers. Several dark skinned men had played professional baseball around the beginning of the twentieth century, but Robinson was the first to overcome the official segregation policy called—ironically, in retrospect—the “gentleman’s agreement.”

Exacerbated by a long drought combined with poor conservation techniques that caused excessive soil erosion on farmlands, a huge dust storm known as Black Sunday rages across Texas, Oklahoma, and several other states, literally turning day to night and redistributing an estimated 300,000 tons of topsoil.