There’s a good chance that we’re all going to live a lot longer than we think. Or at least, that’s what Harry's guest Sergey Young argues in his book The Science and Technology of Growing Young. Young is an investor who leads a $100 million venture capital fund called the Longevity Vision Fund, and through his investing, he says he meets innovators who are coming up with the technologies that will extend our healthy lifespans not just by years but by decades. Those technologies include better drugs, of course, but also gene editing to rejuvenate our DNA and methods for regenerating or replacing old organs, just the way you’d replace the worn-out parts in an old car. All these technologies are coming faster than we think, Young says, and the big question is how widely they’ll be available and whether everyone who wants them will have access to them. That’s the theme of Young’s work at the Longevity Vision Fund, which focuses on companies creating affordable and accessible life extension technologies.