Jimmy Carter was the first U.S. president to have been born in a hospital. You use 15 different muscles in your face to laugh. A group of ravens is called a murder. Cleo and Caesar were the early stage names of Cher and Sonny Bono. Only about half of all spiders spin webs.
Kangaroos are lactose-intolerant.
Charles Darwin's cousin invented the IQ test. Goats can t legally wear trousers in Massachusetts. Niagara Falls was created by a glacier. Clams can live as long as 150 years. In ancient China, doctors received their fees only if their patients were kept healthy.