Dr Richard Aldous: "Carbon capture and storage is a technology that does work. The oil and gas industry have been injecting carbon dioxide deep into the sub-surface for many many decades to get more oil out of the ground typically. It’s also been used to just dispose of CO2 where there’s been a price, for example, on carbon. In Norway in the 1990s a price was introduced on carbon. And as a result of that one of the oil companies there, STAT Oil, elected to inject CO2 as a product of their gas production process. And that’s been going on now for over 15 years. We’ve got a good experience in understanding how the CO2 has been behaving in the sub-surface. But there are a number of projects around the world that are now in in production or in construction as this technology starts to get deployed."