jaki01, Thanks so much for directing me to this post. You provide a great description of the science for longer lives. I'm really interesting in the political, ethical and social implications of this and how this could play out with existing inequalities and power dynamics. Its not hard to see some strong dystopian possibilities. It might be a tech we'd want to unlock only when we have greater capacity to colonize space and reduce the demand on the earth's already limited carrying capacity.