What’s most disturbing about this litany of pain is that it’s only going to get worse. A recent paper in the journal Nature estimates that our chances of keeping global warming below the danger threshold of 2 degrees is now vanishingly small: only about 5 per cent. It’s more likely that we’re headed for around 3.2 degrees of warming, and possibly as much as 4.9 degrees. If scientists are clear about anything, it’s that this level of climate change will be nothing short of catastrophic. Indeed, there’s a good chance that it would render large-scale civilization impossible.
If scientists are clear about anything, it’s that this level of climate change will be nothing short of catastrophic
Why are our prospects so bleak? According to the paper’s authors, it’s because the cuts we’re making to greenhouse gas emissions are being more than cancelled out by economic growth. In the coming decades, we’ll be able to reduce the carbon intensity (CO2 per unit of GDP) of the global economy by about 1.9 per cent per year, they say, if we make heavy investments in clean energy and efficient technology. That’s a lot. But as long as the economy keeps growing by more than that, total emissions are still going to rise.
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