Alessandro Mereghetti holds a piece of a mammoth tusk in the basing of the Indigirka River in the Republic of Sakha, Russia, in 2019Photo by Karen James March 1, 2023 Determining how the diversity of plant-eating megafauna has affected vegetation in the Arctic over the past 150,000 years will be the focus of a new read more Mereghetti to study how megaherbivore diversity affects Arctic vegetation