Boston University’s Agganis Arena hosted Geek Bowl XII, the 12th edition of the nation’s largest live trivia event, on Saturday night. Hundreds of teams gathered at the arena to drink beer and compete for cash prizes, all while helping to support a local organization.

Boston Mayor Martin Walsh announced Monday the expansion of the epicenter of Artists for Humanity, a nonprofit that uses art to prepare teens for the workforce, according to a Monday press release. Walsh...