Food production will have to change to deliver the methane emissions reductions agreed at COP26. How will this work? Last week, I interviewed a “regenerative farmer” in Fife who may have some answers. Claire Pollock has a mixed farm of animals and arable - she doesn’t plough but sows cereal straight onto harvest stubble. Cows eat only grass or silage and they move around regularly - so the farm produces a lot less methane per head.