Every day, approximately 30,000 people die globally of sepsis. The condition comes about when your immune system overreacts to an infection, leading potentially to organ failure and death. There is no cure. But then in 2017, a doctor proposed a novel treatment for sepsis, a mixture that included Vitamin C, arguing it saved the lives of most of his patients. NPR's Richard Harris has been reporting on this treatment and how it's divided scientists from around the world. Follow host Maddie Sofia on Twitter @maddie_sofia. Email the show at shortwave@npr.org.