What I don't understand, when you say you are not a climate change denier, is that we know there's twice as much carbon in the atmosphere now as there was before pre-industrial levels, and you've got to go back many millions of years before there was enough volcanic activity, presumably, to have reached a similar level of carbon. We know that. Nearly all that additional carbon is man made, and, unless it's mitigated, presumably the temperatures will continue to increase. I mean, that's the big picture, and I just don't understand how you can undermine that.