Pigs don’t sweat. born without sweat glands, so when they need to cool off, their only option tends to be to find a cool puddle of mud. McDonald’s introduced drive-through service due to the military. There’s a company that turns dead bodies into an ocean reef. Umbrellas were once only used by women. For 20 years, a cat served as mayor of an Alaskan town. Squirrels are behind most power outages in the U.S. Spider webs were used as bandages in ancient times. A woman who lost her wedding ring found it 16 years later on a carrot in her garden. Blood donors in Sweden receive a text when their blood is used. Cotton candy was invented by a dentist.