Cringe-Worthy Christmas Cards From Over The Years

The More You Know

• The sun and moon appear to be the same size in the sky because of an astonishing coincidence: the moon is 400 times smaller but 400 times closer.
• There's such a thing as a fear of buttons.
• Danny Devito used to work as a hairdresser. For corpses.
• The idea that a man should spend two months salary on an engagement ring was popularized by De Beers' ad agency.