What are the risks in storing CO2 underground?

This week, the EU's Climate Commissioner Wopke Hoekstra warned that "You cannot magically CCS yourself out of the problem". But the new policy he was presenting that day still called for 280 million tonnes of carbon dioxide to be permanently stored underground. The extent to which carbon capture and storage (CCS) technology should be a part of climate planning is contentious, but advocates often point to Norway's long-running CCS plants as proof that it can work. Are Equinor's North Sea g...