Here on Midday Edition, there's a few local experts that we consider regulars on our show. One of them, without a doubt, is Dr. Eric Topol.He’s given us real, practical information about COVID-19 since the onset of the pandemic.Now, Dr. Topol is out with a new book. It’s called “Super Agers: An Evidence-Based Approach to Longevity.” We discuss the book and hear his advice on how to expand longevity through science-backed methods.Guest:Dr. Eric Topol, professor of medicine and executive vice president, Scripps Research Translational Institute