Via Nature Comment, published on July 24:
Climate science: Vast costs of Arctic change. Excerpt:
We calculate that the costs of a melting Arctic will be huge, because the region is pivotal to the functioning of Earth systems such as oceans and the climate. The release of methane from thawing permafrost beneath the East Siberian Sea, off northern Russia, alone comes with an average global price tag of $60 trillion in the absence of mitigating action — a figure comparable to the size of the world economy in 2012 (about $70 trillion). The total cost of Arctic change will be much higher.
Click through and read the whole article. It deals with many aspects of intensified warming from the release of 50 gigatonnes of methane hydrates, and it notes that "Much of the cost will be borne by developing countries, which will face extreme weather, poorer health, and lower agricultural production as Arctic warming affects climate."
But "poorer health" means the explosive spread of waterborne diseases like cholera and vector-borne diseases like malaria and dengue, as well as the stunting of millions of children born into poverty and malnutrition.
We in the relatively rich nations will, as La Rochefoucauld famously observed, always find the strength to bear the misfortunes of others. But we may find our own misfortunes arrive too quickly anyway for us to spare any concern for the poorer nations.
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