Cal reaches out to Harvard grad, science writer and great-grandmother of 12 to get advice on how to respond to the coronavirus. Aunt Mitzi has interviewed hundreds of experts in healthcare over her career and has connections throughout Asia. She's completely up to date on the crisis, and she counsels listeners of Big Questions as if they're her own great-grandkids. Great advice on washing hands, shaking hands, kissing, face masks, public gatherings and worst-case scenarios. Cal sees this episode as one of his finest hours in podcasting, as it could save somebody's life.