★★★★★
2015 Nepal earthquake
A magnitude 7.8 earthquake strikes central Nepal, killing nearly 9,000 people and destroying heritage sites in the Kathmandu Valley.
Disaster· Nepal, India, China
- 2015
- 1974★★★★★
Carnation Revolution
A largely bloodless military coup in Lisbon overthrows the Estado Novo dictatorship, leading to democracy in Portugal and the independence of its African colonies.
Revolution· Portugal - 1953★★★★★
Structure of DNA published
James Watson and Francis Crick publish the double-helix model of DNA in Nature, drawing in part on Rosalind Franklin's X-ray diffraction data.
Science· United Kingdom - 1915★★★★★
ANZAC landing at Gallipoli
The Australian and New Zealand Army Corps landed on the Gallipoli peninsula in the Allies' unsuccessful campaign against the Ottoman Empire; 25 April is now commemorated as Anzac Day.
War· Australia, New Zealand, Turkey, United Kingdom