Word: spans
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Dates: during 1990-1999
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...what if the administration just opened some of them? I could deal with a line if it meant not eating at one of the Greenhouses for a 24-hour span...
...little doubt that both elements are at play. "You have genetics overlaid by environmental factors," says Dr. James Smith, co-chairman of the Huffington Center on Aging at Houston's Baylor College of Medicine. "There's something going on inside the human body to determine a maximum possible life-span of 115 to 120 years. There's a limit--but we have no idea what defines...
...theory goes. Experiments involving restricted diets on primates have produced lower bone mass, a dangerous condition for older people. Moreover, because lab animals do not have the life-span of humans, all this remains highly speculative. Dr. Anna McCormick, chief of the biology section at the National Institute on Aging, cautions that cutting calories may never be an effective method of retarding age in humans. But, she says, "there may be a way to find a hormone or a drug that would have the same effect...
...wear and tear, I'd buy the theory that you could live 500 years," says Dr. Richard Sprott, associate director of the NIA's biology of aging program. "But there is some basic genetic programming, and the only way to significantly increase the life-span is to alter genetics...
Nathan Myhrvold, the physics Ph.D. who is one of Gates' most trusted deputies, told Time a year ago that "no matter how good your product, you are only 18 months away from failure." He was wrong. That span has been cut to six months. And shrinking...