Carbon capture and storage (CCS), sometimes referred to as carbon sequestration, refers to capturing carbon dioxide emissions from a source -- usually a fossil fuel power plant -- before they enter the atmosphere. The carbon is ultimately transported to a storage site, usually underground.

Proponents claim the technology can capture up to 90 percent of the CO2 emissions generated by fossil fuel power plants. But environmental advocates often call it a crutch aimed to keep these plants open, even as cleaner energy sources become more readily available.

Subscribe to carbon capture and storage