"I don't want to make a zoo. I don't to take care of those animals for eternity, I want them to live on their own and in order to have a sustainable ecosystem it's extremely important to have all niches filled in this ecosystem." In the place of the vast Siberian tundras were once great grasslands teeming with wildlife, until early humans hunted them out. In the latest episode of Rewilding the World Nikita Zimov explains how his Pleistocene rewilding project in remotest Siberia is...