On this week's "60 Minutes," NIH Director Dr. Francis Collins speaks with Dr. Jon LaPook about the mutations he's seeing in the coronavirus that make it more serious. Bill Whitaker speaks with Kim Gardner, the first Black woman to be St. Louis' top prosecutor. And Sharyn Alfonsi introduces us to the self-dubbed "Best Band in the Land," New Orleans' St. Augustine High School Marching Band. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.