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Their wordsSo to keep global warming below 2 degrees Celsius over pre-industrial levels by 2100, it's becoming more and more likely that we'll need negative carbon emissions: That is, we'll need to fix the air. We'll need to suck more carbon dioxide out of the atmosphere than we put in.
Our reading
Energy-intensive methods of fixing the air will likely only become practical later in the century.
Their wordsThus, while we can dream about energy-intensive methods of fixing the air, they will only come into their own-if ever-later in the century.
Their wordsBut combined with strenuous efforts to cut emissions, we might squeak by, and keep global warming below 2 degrees Celsius.
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