The last letter added to the English alphabet was ‘J’. It was introduced in 1524 by an Italian grammarian named Gian Giorgio Trissino - before that, ‘i’ was used for both the ‘i’ and ‘j’ sounds.

55% of people worldwide aged 15 and older can't swim.

The whoopee cushion dates back to ancient times, originally made from a pig’s bladder. Records suggest a Roman emperor was known for tricking guests into sitting on one.

The introduction of air conditioning on the NYSE trading floor in 1903 led to a measurable drop in stock market volatility - hot days had previously correlated with lower market returns.

People spend 8% more at restaurants when menus lack currency signs, as it reduces the 'psychological pain' of spending. McDonald's has recently adopted this in some markets.

Even though September isn't the most common birth month in the U.S., 9 of the top 10 most common birthdays fall between Sept 9th - 20th. This links to high conception rates during the December holidays, aka 'New Year's Babies.'

The Netherlands and Spain are in the 'wrong' time zone because the Nazis changed it in 1940, and it was never switched back.