The key point here is that man-made carbon dioxide is actually only 3 per cent of all the carbon dioxide in the atmosphere. So, we're talking about infinitesimally small numbers here. The UK contributes 2 per cent of man-made carbon dioxide worldwide. That carbon dioxide itself contributes only 3 per cent of global carbon dioxide, which itself contributes only 5 per cent of the greenhouse gas effect. We're talking about minute fractions of 1 per cent of carbon dioxide in the atmosphere. So, even if we were able to implement all the measures that are mentioned in the IPCC report, the chances of it having any measurable effect on temperature are vanishingly small. So, the principal message that I want to convey today is that even if there were to be the connection that is thought by those who take a different view between global temperature rises and carbon dioxide, the costs of achieving what you want to do are ruinous and actually the effects will be negligible.