Catching up with trivia

On TV’s popular animated sitcom The Simpsons, what is the name of Bart’s elementary school teacher?

• Edna Krabappel.

For what ailment have regular injections of gold salts long been a standard treatment?

• Rheumatoid arthritis. The gold salts, injected in a liquid suspension, help reduce the inflammation and slow the progress of the disease—but it often takes three to six months to be effective and can cause numerous side effects. The salts can also be taken orally.