What should be done with all the CO2?

Isotainer with CO2 from Switzerland at the borehole in Iceland. (Photograph: Carbfix) Capturing carbon dioxide (CO₂) from the atmosphere and storing it either in recycled concrete aggregate or in geological reservoirs in Iceland is not only technically feasible, but also has a positive carbon footprint. These are the findings of a pilot project lead by ETH Zurich and commissioned by the Swiss confederation. Switzerland has set itself an ambitious goal: to reduce the country's greenhouse gas emissions to net zero by 2050. But this will require more than just a massive expansion of renewable energies and saving measures. The federal government assumes that hard-to-abate CO₂ emissions, e.g. form incineration plants, will amount to 12 million tonnes a year. Some of the CO₂ emitted therefore needs to be removed again from the atmosphere.