Stop this foolish overreaction to climate change

Nigel Lawson
Financial Times
Tuesday, April 8, 2008

Over the past five years I have become increasingly concerned at the scaremongering of the climate alarmists, which has led the governments of Europe to commit themselves to a drastic reduction in carbon emissions, regardless of the economic cost of doing so. The subject is such a complex one, involving science, economics and politics in almost equal measure, that to do it justice I have written a book, albeit a short one, thoroughly referenced and sourced. But the bare bones are clear.

First, given the so-called greenhouse effect, the marked and largely man-made increase in carbon dioxide concentrations in the earth's atmosphere has no doubt contributed to the modest 20th century warming of the planet. But what remains a matter of unresolved dispute among climate scientists is how great a contribution it has made, compared with the natural factors affecting the earth's climate.

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The majority view among climate scientists, as set out in the most recent report of the Intergovernmental Panel on Climate Change, is that "most" of the slight (0.5°C) warming in the last quarter of the 20th century was "very likely" caused by man-made carbon dioxide emissions. On that basis, and relying on computer models, its "best guess" of the likely rise in mean global temperature over the next 100 years is between 1.8°C and 4°C.

These projections were made, incidentally, before the recent acknow-ledgement that so far this century there has been no further global warming at all - in spite of a continuing rapid rise in carbon emissions.

Be that as it may, the IPCC goes on to estimate what the impact of the projected warming would be. It does so on the explicit basis of two assumptions. The first is that, while the developed world can adapt to warming, the developing world lacks the capacity to do so. The second is that, even in the developed world, adaptive capacity is constrained by the limits of existing technology - that is to say, there will be no further technological development over the next 100 years.

The first, distinctly patronising, assumption is almost certainly false. But even it were true it would mean only that, should the need arise, overseas aid programmes would be tailored to ensure that the developing world did acquire the necessary adaptive capacity. The second is self-evidently absurd, not least in the case of food production, given the ongoing developments in bio-engineering and genetic modification.

Full article here.

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