The spread of intensive farming is threatening to jeopardise the world’s chances of meeting the terms of the Paris agreement on the climate crisis, as the increasing use of artificial fertiliser and growing populations of livestock are raising the concentration of a key greenhouse gas to levels far beyond those seen naturally.
Emissions of nitrous oxide are growing at a rate of 1.4% a year, outstripping the forecasts of the Intergovernmental Panel on Climate Change, and left untrammelled would put the world on track to exceed the 2C warming limit set under the Paris agreement, according to a paper published in the journal Nature.