Here's what you may have missed this week on 60 Minutes.Inside a convalescent plasma therapy program treating coronavirus patientsRaw sewage flowing into the Tijuana River brings toxic sludge to CaliforniaNASA is heading back to Mars with a new rover searching for signs of past lifeCOVID-19 plasma donation: What you need to know"Seven minutes of terror" as NASA hopes to land rover Perseverance on MarsBill Whitaker: This virus of racism and injustice has threatened and infected America for 400 years