1933 - The first flight over Mount Everest occurs, as part of a British expedition led by Douglas Douglas-Hamilton, 14th Duke of Hamilton, and funded by Lucy, Lady Houston.
1974 – The Super Outbreak occurred. 148 tornadoes affected 13 states and 1 Canadian province in 18 hours. It was the biggest tornado outbreak in the planet's recorded history. 315 people die, nearly 5,500 are injured.
2016 - Panama Papers: A leak of 11 million legal documents related to the firm Mossack Fonseca in Panama reveals information on 214,488 offshore companies, involving many rich and famous people, including political leaders, businessmen and celebrities.