Marie and Pierre Curie proved the existence of the new element radium when they chemically isolated one-tenth of a gram of pure radium chloride.
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10th April 1971: US table tennis team ushers in ping pong diplomacy
10th April 2020
20th April 2020
20th April 1902: Marie and Pierre Curie prove the existence of radium
15th July 1975: The Apollo Soyuz Test Project lifted off
15th July 2020
14th July 1789: Storming of the Bastille
14th July 2020
11th November 1918: WW1 Armistice of Compiègne is signed
11th November 2018
9th November 1989: East Germany opens the Berlin Wall
9th November 2019
1st September 1939: Nazi Germany invades Poland
1st September 2018