There’s nothing at the moment that makes us live forever, but in principal there is nothing to stop it (at least as far as I know). There is a kind of jelly fish called ‘Turritopsis dohrnii’, which we believe to be immortal and to live forever. I don’t know how they can do this, but we at least know it’s possible.
There is also the possibility that we could somehow live on forever inside a robot or something. But we really don’t know if this is even possible.
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