Picture living forever. According to longevity researcher Aubrey de Grey , within the next 25 years or so people will be able to live 1000 years. All they'll need to do is go to the doctor for regular"maintenance."
■Class discussion: "Imagine the history this person would witness: the colonization of other planets; the harnessing of the Earth's rotation to use as energy; the discovery of life beyond our planet: time travel; invisibility; teleportation ... The list could go on."
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