GLOBAL warming will mean that more people die from the heat. There will be a rise in sea levels, more malaria, starvation, and poverty. Concern has been great, but humanity has done very little that will actually prevent these outcomes. Carbon emissions have kept increasing, despite repeated promises of cuts.

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IN ONE of his first public policy statements as America

The inaction argument makes us spend vast resources on policies that will do virtually nothing to deal with climate change, thereby diverting those resources from policies that could actually make an impact

One commonly repeated argument for doing something about climate change sounds compelling, but turns out to be almost fraudulent. It is based on comparing the cost of action with the cost of inaction, and almost every major politician in the world uses it.

PUBLIC scepticism about global warming may be growing, but the scientific consensus is as solid as ever: man-made climate change is real, and we ignore it at our peril. But if that issue is settled (and it should be), there is an equally-large and important question that remains: what should we do about it?

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