Discover 50 fascinating facts about gold, including its origins, mining, and uses. Did you know that there is more steel created per hour than there has been gold dug up throughout history? Or that around 80% of earth's gold is still buried underground? Learn about the world's first gold vending machine, the gold standard, and the most expensive gold coin in the world. From Fort Knox to Elvis Presley's gold cars, this article covers it all.