and the leader of senegal, macky sall, says, "leave your resources in the ground?ell, the importance of equity in climate policy is absolutely important. and it's not surprising, really, that this issue has come out. i mean, countries like the uk and the us, i have mentioned the fact that europe and north america contributed to 40% of historic emissions of greenhouse gases. it is not surprising that the equity argument is coming to the fore. yeah, i should have said "former president macky sall", because he's no longer in power. i just wonder, when we've talked about the way in which oil and gas production in many ways looks set to expand further, how confident are you that some of the other mitigation weapons, if you like, in the arsenal, how confident are you that they can have a significant impact? i'm thinking, for example, of carbon capture and storage. yeah, carbon capture and storage... i mean, there were big, big ambitions for carbon capture and storage about a decade ago. and i think at the moment, we've got about 20, 25 projects running worldwide... yeah,