Albert Einstein completes his doctoral thesis at the University of Zurich. Albert Einstein’s doctoral thesis, which he completed in 1905 at the age of 26,…
History
29 April 1997
The Chemical Weapons Convention of 1993 enters into force, outlawing the production, stockpiling and use of chemical weapons by its signatories. The Chemical Weapons Convention…
28 April 1945
Benito Mussolini and his mistress Clara Petacci are shot dead by Walter Audisio, a member of the Italian resistance movement. Benito Mussolini (1883-1945) was an…
27 April 2007
Israeli archaeologists discover the tomb of Herod the Great south of Jerusalem. Herod the Great (c. 73 BCE – 4 BCE) was a king of…
26 April 1986
The Chernobyl disaster occurs in the Ukrainian Soviet Socialist Republic. The Chernobyl disaster was a catastrophic nuclear accident that occurred on April 26, 1986, at…
25 April 1953
Francis Crick and James Watson publish “Molecular Structure of Nucleic Acids: A Structure for Deoxyribose Nucleic Acid” describing the double helix structure of DNA. The…
24 April 2011
WikiLeaks starts publishing the Guantanamo Bay files leak. WikiLeaks is a non-profit organization that publishes secret and classified information from anonymous sources. It was founded…
23 April 1985
Coca-Cola changes its formula and releases New Coke. The response is overwhelmingly negative, and the original formula is back on the market in less than…
22 April 1970
The first Earth Day is celebrated. Earth Day is an annual event celebrated on April 22nd, with the aim of raising awareness and promoting action…
21 April 1856
Australian labour movement: Stonemasons and building workers on building sites around Melbourne march from the University of Melbourne to Parliament House to achieve an eight-hour…