FILE PHOTO: Sergey Zimov, a scientist who works at Russia’s

FILE PHOTO: Sergey Zimov, 66, a scientist who works at Russia’s Northeast Science Station, checks materials stored underground in the permafrost at the Pleistocene Park outside the town of Chersky, Sakha (Yakutia) Republic, Russia, September 13, 2021. REUTERS/Maxim Shemetov/File Photo