But how far can we push it? 100 years? 120? The Sunday Times of London offers a survey of current research and suggests that, at the rate medical science is advancing, it's possible that some children alive today may live a thousand years or more!
This will require a number of medical breakthroughs that aren't even on the horizon today, so don't order your tickets for Super Bowl MXXIV just yet. (That's the year 3000. No, the Vikings will not win.) But according to researchers, human immortality is at least theoretically possible.
This raises a number of social, moral and philosophical questions.
And, perhaps most important, what will we do with all that extra time? As the author Susan Ertz noted, "Millions yearn for immorality who do not know what to do with themselves on a rainy Sunday afternoon." (Easy for her to say; she died in 1985 at the ripe old age of 89.)