By: Rosie McCall/IFL Science  Humanity has been looking for a way to “fix” our own mortality since, well, forever. In medieval times, there were the alchemists who searched for a universal elixir or philosopher’s stone. In the 20th century, people paid to be cryogenically frozen and now we have companies, like Humaii and Carboncopies, using artificial intelligence (AI) and nanotechnology to enable…