Meet Jo Nagai: 10-year-old Japanese student who discovered butterflies can remember their time as caterpillars after he noticed that the caterpillars he had raised to recognise him after turning into butterflies

• A 10-year-old student from Japan has captured worldwide attention after his fascination with butterflies led to a remarkable scientific study that is challenging long-held assumptions about insect memory.
• Jo Nagai, an elementary school student from Kobe, spent years carefully observing the Asian swallowtail butterflies he raised at home.
• His curiosity was sparked when he noticed that the butterflies appeared to recognise him even after undergoing metamorphosis from caterpillars.