NEW YORK – When politicians around the world tell the story of global warming, they cast it as humanity’s greatest challenge. But they also promise that it is a challenge that they can meet at low cost, while improving the world in countless other ways. We now know that is nonsense.
Political heavyweights from US Secretary of State John Kerry to UN Secretary General Ban Ki-moon call climate change “the greatest challenge of our generation.” If we fail to address it, Kerry says, the costs will be “catastrophic.” Indeed, this has been the standard assertion of politicians since the so-called Stern Review commissioned by the British government in 2006.
That report famously valued the damage caused by global warming at 5-20% of GDP – a major disruption “on a scale similar to those associated with the great wars and the economic depression of the first half of the twentieth century.”
Tackling climate change, we are told, would carry a much lower cost. The president of the European Commission promised that while the European Union’s climate policies are “not cost-free,” they would amount to just 0.5% of GDP. Indeed, politicians of all stripes have reiterated the Stern Review’s finding that global warming can be curtailed by policies costing just 1% of world GDP.