[mishkovski]

> If these revived woolly mammoths eventually repopulate the Arctic, they would take down small trees and help repopulate the grasses they thrive on, Church said. Those grasses reflect sunlight better than the dark trunks of the conifer trees that live there. In addition, the woolly mammoths tamp down the snow, making it less insulating.

Those grasses would cool the ecosystem, in turn reducing the release of trapped methane gas from melting permafrost, a major contributor to global warming.