The two forms of carbon capture are:

1. Pre-combustion capture: This involves capturing carbon dioxide before it is released into the atmosphere during the combustion process. This can be achieved by converting fossil fuels into a cleaner-burning fuel, such as hydrogen, which produces water vapor instead of carbon dioxide when burned.
2. Post-combustion capture: This involves capturing carbon dioxide after it has been released into the atmosphere during the combustion process. This can be achieved through the use of carbon capture and storage (CCS) technologies, which involve capturing the carbon dioxide emissions from power plants and other industrial processes and storing them underground.