Google employee Emma Haruka Iwao broke a world record by calculating Pi right down to 31.4 trillion digits!
Source
Finland became the world's happiest country.
President Warren G. Harding became the first president to pay taxes in the US.
Beyoncé won her 28th Grammy Award, breaking the world record for most Grammys won by an artist.
US president Bill Clinton tore his knee and required surgery.
US best-selling cookie ''Oreo" trademarked its name.
