The Economist -
11 Oct 2018 16:49

IN 1996 the European Union became the first significant political body to suggest that the goal of preventing "dangerous anthropogenic interference in the climate", to which the world had signed on at the Rio Earth summit of 1992, meant, in practical terms, keeping global warming below 2°C relative to the late 1800s. This two-degree limit had been an informal measure of the point where climate change gets serious since the 1970s. William Nordhaus, a pioneer of climate economics who this week sh...
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