- Adding rock dust to UK agricultural soils could remove between 6 and 30 million tonnes of car CO2 from the atmosphere annually by 2050. This represents up to 45 per cent of the atmospheric carbon removal required nationally to meet net-zero greenhouse gas emissions alongside emissions reductions. https://www.sheffield.ac.uk/news/managing-uk-agriculture-rock-dust-could-absorb-45-cent-atmospheric-carbon-dioxide-needed-net-zero 96 comments science