Gambling addiction has one of the highest suicide-attempt rates among addictive disorders, with an estimated 1 in 5 attempting at some point.

From Roman times to the 15th century, socks were a symbol of wealth, as only the rich could afford finely woven or knitted ones, while the poor made do with cloth wrappings or went barefoot.

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The whoopee cushion dates back to ancient times, originally made from a pig’s bladder.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.'