Kazuki Takahashi and Manabu Tokeshi (IMAGE) Hokkaido University Caption Kazuki Takahashi (left), co-first author of the paper and Manabu Tokeshi (right), corresponding author (Photo: Manabu Tokeshi). Credit Manabu Tokeshi Usage Restrictions This image is copyrighted but may be used to report this press release, if credited as instructed. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.