Venezuela created its first virtual currency, called the petro, in hopes of saving its economy.
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Danish-Norwegian explorer Caroline Mikkelsen became the first woman to set foot in Antarctica.
A John Lennon fan bought a lock of his hair for $35,000 at an auction in Dallas, Texas, USA.
A polymer note replaced the paper £20 note in the UK.
The Station nightclub in Rhode Island burned down, killing 100 people.
John Glenn became the first American to orbit planet Earth.