Joseph Guillotin, namesake of the guillotine, opposed capital punishment but promoted the device as a more humane alternative to the brutal execution methods of his time when abolition proved impossible.

A recent study found that parents who use humour have better relationships with their children. Among those with humorous parents, 50.5% reported a good relationship, compared to only 2.9% among those whose parents didn’t use humour.

American, Russian, and other military forces around the world train and use sea animals such as dolphins, walruses, and whales for surveillance and various other purposes.

It is estimated that up to 12% of women might be tetrachromats - capable of perceiving millions more colours than the average person. Men generally cannot have this condition.

Rock-paper-scissors originates from Jan-ken, a Japanese variation of a Chinese game brought to Japan in the 17th century, which featured a slug, frog, and snake.

Research shows that consumer demand for sausages is inversely proportional to the health of the economy.

Blinking throughout the day adds up to having your eyes closed for about 30 minutes.