How loving strangers changes your brain (and your life)

Green Book (2018) is a drama based on a true story about an unlikely friendship that develops during a 1960s road trip through the segregated American South. The film follows Tony “Lip” Vallelonga, a tough Italian-American bouncer from the Bronx, who takes a job as a driver for Dr. Don Shirley, an African-American classical pianist. As they travel from New York to the Deep South for Shirley’s concert tour, they use “The Negro Motorist Green Book” — a guide listing safe places for Black travelers