Probing Question: How Long Can Humans Live?
Aging and Long Life
How long can humans live? Before answering, said Robert Mitchell, professor of biology at Penn State, "We have to distinguish between maximum lifespan, which is as long as any human has ever lived, and life expectancy, which is how long you could live predictably, based on insurance statistics, for example. As far as maximum lifespan goes, we suspect it's around 125 years. There is