Valter Longo, PhD, is a longevity researcher at the University of Southern California whose broad vision and ability to focus on the details of scientific enquiry over a 30-year career may provide the data we need to extend the human lifespan by decades. And not through CRISPR or nanotechnologies or Himalayan yak butter in our coffee, but through simple lifestyle and diet tools readily available to many of us, like plant-based food and moderate physical activity.