Progress Report: Vatican City Runs on Pure Sunshine

On this week's Progress Report, Zachary and Emma explore news stories that highlight human progress, from a university student’s discovery of a fungus related to LSD to a breakthrough in HIV research that could lead to a cure. Also, there’s more power and less murder, as Vatican City is running completely on solar energy while Brazil has reported a drop in recorded homicides. Learn more about your ad choices. Visit megaphone.fm/adchoices