Did the butterflies remember him? Japanese student's discovery uncovers astonishing insect memory

• Typical children going to an elementary school in Japan mostly spend their free time studying, playing baseball or reading all the manga they can get their hands on.
• But Jo Nagai, a ten-year-old resident of Kobe, Japan decided to spend his spare time hand-raising swallowtail butterflies.
• Identified with the bright dots that outline their wings, the Asian swallowtails are fantastic pollinators for local plants and flowers.