… The winner of the $1 million Hult Prize 2023 , the world’s biggest student social entrepreneurship business competition, was announced in Paris on September 22nd by … superstar, Stella McCartney. Banofi Leather of Yale University triumphed over five other global university start-ups, marking the end of the year-long student challenge. … superstar, Stella McCartney. Banofi Leather of Yale University triumphed over five other global university start-ups, marking the end of the year-long student challenge. Page Image …