Question:
Michael John Kells Fleetwood was born in Redruth, second child to John Joseph Kells Fleetwood and Bridget Maureen (nee Brereton) Fleetwood. His elder sister Susan Fleetwood, who died of cancer in 1995, became an actress. In early childhood Fleetwood and his family followed his father, a Royal Air Force fighter pilot, to Egypt. After about six years, they moved to Norway where his father was posted on a NATO deployment.
In November 1977 Fleetwood and Nicks began having an affair. It would continue sporadically for the next two years during the fallout from the end of Fleetwood's relationship with Boyd, until the pair mutually decided to end the affair. "Never in a million years could you have told me that [her affair with Fleetwood] would happen," Nicks later stated. "Everybody was angry, because Mick was married to a wonderful girl and had two wonderful children. I was horrified. I loved these people. I loved his family. So it couldn't possibly work out. And it didn't. I just couldn't." Boyd and Fleetwood had in fact begun living together once more in 1976, and would remarry temporarily to assist their children with emigration to the United States. However they quickly divorced for the second time some months later. In November 1978 Fleetwood moved into a Bel Air home with Sara Recor, mutual friend of Fleetwood and Nicks who was at the time married to another music producer. Meanwhile, Fleetwood began working on a charity project to get Fleetwood Mac to tour the Soviet Union, however the Soviet War in Afghanistan later made the tour untenable.  Tusk, Fleetwood Mac's 12th studio album, was released in 1979. The work represented a more experimental direction taken by Buckingham. Fleetwood, recently diagnosed as having diabetes after suffering recurring bouts of hypoglycemia during several live shows, was again instrumental in maintaining the band's cohesion. He placated Buckingham over feelings of creative claustrophobia and discomfort playing alongside Nicks. On the issue of Buckingham taking creative control away from the other members of the group for the creation of Tusk, Fleetwood recounts that his three-day discussion with Buckingham culminated in him telling the latter that "if it's good, then go ahead." Though the nature of the album strained relationships again within the band - particularly John McVie, a long-established blues musician who disliked the experimental nature of the album - Fleetwood himself rates the album as his favourite by Fleetwood Mac, and cites the freedom of creative expression allotted to each band member as integral to the survival of the group. The album sold four million copies worldwide, a return noticeably poorer than Rumours. Though Buckingham was blamed by the record labels, Fleetwood linked the album's relative failure to the RKO radio chain playing the album in its entirety prior to release, thus allowing mass home taping.  Later that year, Fleetwood Mac embarked on a lengthy tour that brought them across America, Canada, Australia, New Zealand, Japan, France, Germany, Switzerland, Belgium, the Netherlands, and the UK. The tour lasted from October 1979 to September 1980, consisting of 113 concerts.
Answer this question using a quote from the text above:

What was experimental about Tusk?

Answer:
the freedom of creative expression allotted to each band member as integral

Answer the question at the end by quoting:

Carter was born in Clifton, New Jersey, the fourth of seven children. He acquired a criminal record and was sentenced to a juvenile reformatory for assault, having stabbed a man when he was 11. Carter escaped from the reformatory in 1954 and joined the Army. A few months after completing infantry basic training at Fort Jackson, South Carolina, he was sent to West Germany.
After his release from prison in September 1961, Carter became a professional boxer. At 5 ft 8 in (1.73 m), Carter was shorter than the average middleweight, but he fought all of his professional career at 155-160 lb (70-72.6 kg). His aggressive style and punching power (resulting in many early-round knockouts) drew attention, establishing him as a crowd favorite and earning him the nickname "Hurricane." After he defeated a number of middleweight contenders--such as Florentino Fernandez, Holley Mims, Gomeo Brennan, and George Benton--the boxing world took notice. The Ring first listed him as one of its "Top 10" middleweight contenders in July 1963. At the end of 1965, they ranked him as the number five middleweight.  He fought six times in 1963, winning four bouts and losing two. He remained ranked in the lower part of the top 10 until December 20, when he surprised the boxing world by flooring past and future world champion Emile Griffith twice in the first round and scoring a technical knockout. That win resulted in The Ring's ranking of Carter as the number three contender for Joey Giardello's world middleweight title. Carter won two more fights (one a decision over future heavyweight champion Jimmy Ellis) in 1964, before meeting Giardello in Philadelphia for a 15-round championship match on December 14. Carter landed a few solid rights to the head and staggered Giardello in the fourth, but was unable to follow them up, and Giardello took control of the fight in the fifth round. The judges awarded Giardello a unanimous decision.  After that fight, Carter's ranking in The Ring began to decline. He fought nine times in 1965, winning five but losing three of four against contenders Luis Manuel Rodriguez, Dick Tiger, and Harry Scott. Tiger, in particular, floored Carter three times in their match. "It was," Carter said, "the worst beating that I took in my life--inside or outside the ring." During his visit to London (to fight Scott) Carter was involved in an incident in which a shot was fired in his hotel room.  Carter's career record in boxing was 27 wins, 12 losses, and one draw in 40 fights, with 19 total knockouts (8 KOs and 11 TKOs). He received an honorary championship title belt from the World Boxing Council in 1993 (as did Joey Giardello at the same banquet) and was later inducted into the New Jersey Boxing Hall of Fame.

When did he retire from boxing?