What do you call an extra advertising section placed loosely inside a newspaper?

In 1985, astronaut Sherwood Spring left which kind of spacecraft to perform spacewalks testing construction in space? What is an expert in Robert's Rules of Order called? Which word means both an explosion and an enlargement of a photograph? What is an extensive organized search for a fugitive called? What is an extra fee charged for a special service called? Ken Kesey's band of counterculture followers who toured the U.S. in a bus called "Further" were known as the ___ Pranks… The Exxon tanker that ran aground on Bligh Reef in March 1989 was named for which Alaskan port? Which three-letter word names both an eye irritation and a pigpen?