Facebook whistleblower speaks to 60 Minutes; Public Service Loan Forgiveness Program not living up to its name; Despite his Alzheimer's, Tony Bennett prepares to perform with Lady Gaga.

Scott Pelley’s interviews with some of the people at the center of the Jan. 6 attack on the U.S. Capitol, including the first sit-down TV interview with top prosecutor U.S. attorney Matthew Graves; Cecilia Vega’s report on the growing tensions between China and the Philippines over territory in the South China Sea and how it could lead to U.S. involvement; Anderson Cooper’s interview with pop superstar Dua Lipa about her journey from unknown singer to international sensation.