These immortal flatworms regenerate like real-life Time Lords

We know there are a few species that don't die of old age, like the giant tortoise and naked mole rat. But those species aren't truly immortal — as they still eventually die. These tiny worms might be a different story... one which could have major implications for humans trying to live longer. » 2/28/12 3:00pm 2/28/12 3:00pm