As a scientist and astronaut, Walter Cunningham has accomplished many things. Known as America's second civilian astronaut, he has a big reputation. Still, to this very day, Cunningham is alive at the age of 87.
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As a world-renowned cardiac surgeon, Michael DeBakey is known for improving the medical world. He developed Mobil Army Surgical Hospitals and was one of the 1st surgeons to perform a coronary artery bypass surgery.
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By performing the first implantation of a total artificial heart, Denton Cooley is a well-known figure in the medical field. He's also the founder and surgeon-in-chief of The Texas Heart Institute.
Howard Hughes, Sr.
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Being the 1st woman to become a pediatric surgeon, Benjy Brooks is another important figure in the history of surgery. She also did plenty of research on treatments for many problems such as congenital defects, burns, spleen reparation, etc.
Michael Dell is an American businessman, investor, philanthropist, and author who founded DELL COMPUTERS. His current net worth is a result due to his career.
Making drill bits for the oil industry, Howard Hughes, Sr. made most of his money off Texas oil. He was also the founder of Hughes Tool Company, invented the "Sharp–Hughes" rotary tri-cone rock drill bit during the Texas Oil Boom, and best known as the father of Howard Hughes.