American pop singer Ariana Grande joined YouTube at 13 years old.
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A meteorite that hit Australia 2.2 billion years ago was announced as Earth's oldest recognized meteorite impact structure.
The Mysterious Affair at Styles, by British crime writer Agatha Christie, was published in the UK.
A medical paper on smallpox was published in Boston, making it the first medical publication in American history.
Hundreds of thousands of Americans who evaded the Vietnam War were pardoned by President Jimmy Carter.
New York City passed a law prohibiting women from smoking in public places.
