Harvard Geneticist: "Immortality May Have Already Happened!"

What if living longer isn’t about chasing immortality but about quietly staying one step ahead of aging?

Julian sits down with George Church for a wide-ranging conversation that challenges how we think about longevity, aging, and medical progress. Rather than promising overnight breakthroughs, they explore why extending human life is a complex, multi-layered challenge and why meaningful progress may already be happening so gradually that it’s easy to miss. From the concept of “longevity escape velocity” to the difficulty of measuring aging itself, the discussion reframes what it truly means to live longer and healthier.

Together, Julian and George unpack how advances in gene therapy, multiplex genome editing, and AI-driven protein design are reshaping medicine. The focus moves away from sci-fi fantasies toward real-world applications: reversing age-related diseases, improving targeted drug delivery, shortening clinical trials, and reducing risk. They also explore the ethical, societal, and economic implications of longer lives and why revolutions in science often feel invisible right up until they become impossible to ignore.