On this day in 1882, Robert Koch, who is considered the father of modern bacteriology, announces the discovery of the bacterium responsible for tuberculosis.
On this day in 1896, Aleksander Popov achieves the world’s first radio transmission by sending the words “Heinrich Hertz” in morse code from one building to another.
On this day in 2016, Serbian politician Radovan Karadžić is found guilty of war crimes, including genocide.

