➀ 17-year-old Cesare Mencarini developed a small nuclear fusion reactor as part of his A-Levels, aiming to generate neutrons for his Extended Project Qualification (EPQ). ➁ The reactor, built in a school environment, achieved plasma and was showcased at the Cambridge Science Festival. ➂ Mencarini plans to pursue a degree in engineering and aims to work at the University of Bristol’s Interface and Analysis Centre.