Rewilding: restoring lost species to save ecosystems

At first they were just shadows, dark impressions glimpsed through the mist. Is that really…? Could it be…? As we moved a little closer one of them turned to the east, to face the rising sun. His profile was unmistakable, the curved horns and humped shoulders proclaiming “bison”! And not just any bison, but free-ranging European bison, grazing…