Whatever politicians, activists and manipulators propose, it is the phlegmatic, indifferent, ingrained electorate which disposes.

Is the warming unprecedented? Probably not. There is abundant historical and proxy evidence for both hotter and cooler periods in human history. Is it our fault? Again, maybe. The correlation of increasing warmth with increasing carbon dioxide concentrations is particularly weak that with solar energy and with ocean movements is much stronger.

Are we likely to see rising sea-levels? Not in our lifetimes or hose of our grandchildren. It is not even clear that sea-levels have risen at all. As so often in this domain, there is conflicting evidence. The melting of polar or sea ice has no direct effect.