Answer the question at the end by quoting:

Johnny Burnette was born to Willie May and Dorsey Burnett Sr. in Memphis, Tennessee. (The "e" at the end of his name was added later.) Johnny grew up with his parents and Dorsey Jr. in a public housing project in the Lauderdale Courts area of Memphis, which from 1948 until 1954 was also the home of Gladys and Vernon Presley and their son, Elvis.
In 1952, the Burnette brothers and Burlison formed a group called the Rhythm Rangers. Johnny sang and played acoustic guitar, Dorsey played bass and Paul Burlison played lead guitar. For economic reasons, the three moved to New York in 1956 and managed to get an audition for Ted Mack's Original Amateur Hour. Winning the competition three times in a row gained them a place in the finals and a recording contract with Coral Records, and they renamed themselves the Rock and Roll Trio. They also gained a manager, the bandleader Henry Jerome, and a drummer, Tony Austin (a cousin of Carl Perkins).  Promotional appearances were arranged on Dick Clark's American Bandstand, Steve Allen's Tonight Show and Perry Como's Kraft Music Hall, together with a summer tour with Carl Perkins and Gene Vincent. On Sunday September 9, 1956, they appeared as finalists in the Original Amateur Hour at Madison Square Garden. Despite this activity, the three singles they released over this period failed to make the national charts.  In order to cover their living expenses, the Trio was forced to go on the road, for what seemed to be an endless stream of one-night stands. This exhausting regime led to squabbles, which were exacerbated in Dorsey's case by Jerome's use of the name Johnny Burnette and the Rock and Roll Trio on records and live dates. Things finally came to a head at a gig in Niagara Falls in autumn 1956, when, as a result of a fight, Dorsey quit the group a week before they were to appear in Alan Freed's film Rock, Rock, Rock.  Johnny Black, the brother of Elvis's bassist Bill Black, was rapidly recruited to fill Dorsey's place. Despite the film appearance and three more single releases and one LP release, the group failed to achieve any chart success. The Rock and Roll Trio disbanded in autumn 1957.

what did each of them do in the band?

Johnny sang and played acoustic guitar, Dorsey played bass and Paul Burlison played lead guitar.

IN: Fazlur Rahman Khan (Bengali: phjlur rhmaan khaan, Fozlur Rohman Khan) (3 April 1929 - 27 March 1982) was a Bangladeshi-American structural engineer and architect, who initiated important structural systems for skyscrapers. Considered the "father of tubular designs" for high-rises, Khan was also a pioneer in computer-aided design (CAD). He was the designer of the Sears Tower, since renamed Willis Tower, the tallest building in the world from 1973 until 1998, and the 100-story John Hancock Center. Khan, more than any other individual, ushered in a renaissance in skyscraper construction during the second half of the 20th century.

Khan's central innovation in skyscraper design and construction was the idea of the "tube" structural system for tall buildings, including the framed tube, trussed tube, and bundled tube variants. His "tube concept", using all the exterior wall perimeter structure of a building to simulate a thin-walled tube, revolutionized tall building design. Most buildings over 40 stories constructed since the 1960s now use a tube design derived from Khan's structural engineering principles.  Lateral loads (horizontal forces) such as wind forces, seismic forces, etc., begin to dominate the structural system and take on increasing importance in the overall building system as the building height increases. Wind forces become very substantial, and forces caused by earthquakes, etc. are important as well. The tubular designs resist such forces for tall buildings. Tube structures are stiff and have significant advantages over other framing systems. They not only make the buildings structurally stronger and more efficient, but also significantly reduce the structural material requirements. The reduction of material makes the buildings economically more efficient and reduces environmental impact. The tubular designs enable buildings to reach even greater heights. Tubular systems allow greater interior space and further enable buildings to take on various shapes, offering added freedom to architects. These new designs opened an economic door for contractors, engineers, architects, and investors, providing vast amounts of real estate space on minimal plots of land. Khan was among a group of engineers who encouraged a rebirth in skyscraper construction after a hiatus of over thirty years.  The tubular systems have yet to reach their limit when it comes to height. Another important feature of the tubular systems is that buildings can be constructed using steel or reinforced concrete, or a composite of the two, to reach greater heights. Khan pioneered the use of lightweight concrete for high-rise buildings, at a time when reinforced concrete was used for mostly low-rise construction of only a few stories in height. Most of Khan's designs were conceived considering pre-fabrication and repetition of components so projects could be quickly built with minimal errors.  The population explosion, starting with the baby boom of the 1950s, created widespread concern about the amount of available living space, which Khan solved by building upward. More than any other 20th-century engineer, Fazlur Rahman Khan made it possible for people to live and work in "cities in the sky." Mark Sarkisian (Director of Structural and Seismic Engineering at Skidmore, Owings & Merrill) said, "Khan was a visionary who transformed skyscrapers into sky cities while staying firmly grounded in the fundamentals of engineering."

Are there any other interesting aspects about this article?

OUT:
Khan's central innovation in skyscraper design and construction was the idea of the "tube" structural system for tall buildings,