Can We Stop Aging? – Scientific American
What if our body could stay in its prime forever? What if we could be biologically immortal like a hydra—a tiny freshwater creature that can continuously renew its cells? Or what if we could turn back the clock like some jellyfish that never die but revert to an earlier form and go through life all over again?
But most cells in our body aren’t built to last a lifetime: they’re damaged all the time by everything from ultraviolet rays to poor nutrition. When this happens, cells make copies of their chromosomes, which contain our DNA, and divide into healthy new cells.
But at some point, cells lose their ability to replicate.
With each cell division the ends of …….