91-year-old professor's virtual teaching goes viral during pandemic Charles Krohn, a professor emeritus at the University of St. Thomas in Houston, is embracing a new way of teaching at the age of 91. Meg
91-year-old professor's virtual teaching goes viral during pandemic Charles Krohn, a professor emeritus at the University of St. Thomas in Houston, is embracing a new way of teaching at the age of 91. Meg