North Dakota was chosen for storage because of available pore space found in rocks more than a mile under the land’s surface. The prime underlying geology allows for CO2 to be stowed into a porous, sponge-like rock layer and confined by the less porous rock above.

North Dakota regulators have approved permits for underground carbon dioxide storage for a massive pipeline proposed for the Midwest.

North Dakota’s Industrial Commission on Thursday approved a plan to accept millions of tons of carbon dioxide to be permanently stored underground against the wishes of some landowners in the storage area.