Alexander Paukov (IMAGE) Ural Federal University Caption Alexander Paukov collects lichen samples from all over the world. Credit UrFU / Anna Babikova Usage Restrictions Photo may be freely used to illustrate this topic, but please credit the author of the image: UrFU / Anna Babikova. License Original 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.