Cows, pigs, sheep and poultry have been awarded the dubious honour of being among the world's greatest environmental threats, according to the UN Food and Agriculture Organization (FAO).
The report, entitled Livestock's long shadow, says the livestock industry is degrading land, contributing to the greenhouse effect, polluting water resources, and destroying biodiversity. In summary, the sector is "one of the top two or three most significant contributors to the most serious environmental problems at every scale".