The Economic Times

10-year-old Japanese boy finds butterflies he raised from caterpillars remember him; his curiosity leads to a surprising discovery about how insect memory works

10-year-old Japanese boy Jo Nagai noticed that the swallowtail butterflies he raised from caterpillars kept flying back to him after release. That observation led to a home experiment, a collaboration with a Georgetown University entomologist, and a 33-page research report that demonstrated insect memory can survive metamorphosis and pass across generations.