"Impossible" Technologies #3: Immortality

There are two aspects of life which everyone can expect: paying taxes and death.

Though tax evasion is a thing, that’s not what I’m talking about today.

I plan to live forever, of course, but barring that I’d settle for a couple thousand years. Even five hundred would be pretty nice

— CEO Nwabudike Morgan, "Sid Meier's Alpha Centauri"

The concept of living forever is a fundamental aspect of our existence. Almost every major religion, from Christianity and Hinduism to the ancient Egyptian a...