This story was originally published in The Guardian and appears here as part of the Climate Desk collaboration. Randal Plunkett strides through the hip-high grass of Dunsany, a 650-hectare (1,600-acre) estate in the middle of Ireland, trailed by an invisible swarm of midges and his four Jack Russell terriers: Tiny, Lumpy, Chow, and Beavis & Butt-Head. The cattle and sheep are long gone, so too are the lawns and many of the crops. In their place is a riot of shrubs, flowers, and trees, along with insects and creatures that…