"Fool's Gold" May Hold Value After All

Famous for raising hopes of riches beyond imagination--and then dashing them--the mineral pyrite is better known as fool's gold. Its metallic yellow luster has fooled many over the years, with consequences that helped shape the modern world, along with the fortunes (and misfortunes) of individuals: According to one story, a fool got what he deserved by marrying a woman for the "hills of gold" on her land that--as you might have guessed--turned out to be hills of pyrite. A close-up of a small pie...