The price of a barrel of crude oil dipped below zero.
Prince Charles was appointed to become the next head of the Commonwealth once Queen Elizabeth II passes.
The Deepwater Horizon oil rig explodes.
15 die in the Columbine High School massacre.
A swamp rabbit attacked President Jimmy Carter while he was fishing in Plains, Georgia.
Soviet air defense shoots down Korean Air Lines Flight 902.
Nutella appeared on store shelves in Alba, Italy, and became an instant success.
A human organ is surgically reconstructed for the first time.
The League of Nations was officially dissolved by its member states.
Nazi-German ace fighter pilot, The Red Baron, shot down his final two victims.
Marie and Pierre Curie isolate radium in Paris, France.
Captain James Cook arrived at the shore in New South Wales, Australia.
French mathematician Pierre Louis Maupertuis began his journey to Lapland to plot the shape of the Earth.
Oliver Cromwell dissolved England's Rump Parliament.
The first official performance of Macbeth by Shakespeare took place at the Globe Theatre in London, England.
