The world’s soils hold far more carbon as organic matter than all the vegetation on the planet – including forests. 82% of the world’s carbon exists in soils. Harvey believes that, just as we have depleted soils of carbon by industrial crop production, we could easily put it back by changing the way we grow food. Reduced tillage and the use of cover crops could increase the level of organic matter in the soil and so encourage carbon capture – even under intensive crop farming. Producing food from well-maintained grasslands could actually reverse climate change. According to the Royal Society, carbon capture by the world’s farmlands could with better management of the soil, be as much as 10 million tonnes of CO2 a year – that’s more than the annual accumulation of CO2 in the atmosphere. “A different form of agriculture, with more emphasis on grasslands, wouldn’t merely help with the problem of climate change. It would solve it.”
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