The most damaging farm products? Organic, pasture-fed beef and lamb

Analysis: You may be amazed by that answer, but the area of land used for grazing is vast compared with the meat and milk produced

• How can the UK reduce meat consumption and cut emissions?
• England must reduce meat intake to avoid climate breakdown, says food tsar

Perhaps the most important of all environmental issues is land use. Every hectare of land we use for extractive industries is a hectare that can't support wild forests, savannahs, wetlands, natural grasslands and other crucial ecosystems. And farming swallows far more land than any other human activity.

What are the world's most damaging farm products? You might be amazed by the answer: organic, pasture-fed beef and lamb. I realise this is a shocking claim. Of all the statements in my new book, Regenesis, it has triggered the greatest rage. But I'm not trying to wind people up. I'm trying to represent the facts. Let me explain.