The Sahara Desert temperature dropped so low that some areas became covered in snow.
Source
American astronomer Clyde Tombaugh discovered Pluto.
Mark Twain's Adventures of Huckleberry Finn was published in the United States.
WikiLeaks published the first US diplomatic cable leak provided by Chelsea Manning.
The Perseverance rover successfully landed on Mars.
Winston Churchill gave his first speech in the British House of Commons.
