At 17, Hannah Cairo solved a major math mystery
Cairo followed this advice. In the fall of 2023, her family moved to Davis, 60 miles northeast of Berkeley. There, her older brother enrolled as a freshman at UC Davis, and her parents allowed her to commute to Berkeley on Tuesdays and Thursdays. By the spring, she was going five days a week and taking several more classes. She recalls it as a time in her life when she began to feel full of possibility. “I had started making friends, and I was feeling good,” she said. After the spring semester