The Sahara Desert temperature dropped so low that some areas became covered in snow.
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American astronomer Clyde Tombaugh discovered Pluto.
Actor Yul Brynner starred in an anti-smoking ad campaign while dying of smoking-related lung cancer.
Winston Churchill gave his first speech in the British House of Commons.
The Perseverance rover successfully landed on Mars.
WikiLeaks published the first US diplomatic cable leak provided by Chelsea Manning.
