New reports tell us cattle and sheep farming can be sustainable – don’t believe them, it’s all bull | George Monbiot

Feeding the world sustainably is an incredibly complex challenge, yet some people are trying to sell us a bucolic fairytaleThe fire that has just destroyed 500 hectares (1,230 acres) of Dartmoor should have been impossible. It should not be a fire-prone landscape. But sheep, cattle and ponies have made it so. They selectively browse out tree seedlings, preventing the return of temperate rainforest, which is extremely difficult to burn. In dry weather, the moor grass, bracken and heather covering