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Related: About this forum(opinion) The climate science is clear: it's now or never to avert catastrophe
https://www.theguardian.com/commentisfree/2019/nov/20/climate-crisis-its-now-or-never-to-avert-catastropheThe climate science is clear: it's now or never to avert catastrophe
Bill McKibben
Wed 20 Nov 2019 09.00 GMT Last modified on Wed 20 Nov 2019 09.26 GMT
The one thing never to forget about global warming is that its a timed test.
Its ignoble and dangerous to delay progress on any important issue, of course if, in 2020, America continues to ignore the healthcare needs of many of its citizens, those people will sicken, die, go bankrupt. The damage will be very real. But that damage wont make it harder, come 2021 or 2025 or 2030, to do the right thing about healthcare.
But the climate crisis doesnt work like that. If we dont solve it soon, we will never solve it, because we will pass a series of irrevocable tipping points and were clearly now approaching those deadlines. You can tell because theres half as much ice in the Arctic, and because forests catch fire with heartbreaking regularity and because we see record deluge. But the deadlines are not just impressionistic theyre rooted in the latest science.
In the aftermath of the Paris climate accords in 2015, for instance, many researchers set 2020 as the date by which carbon emissions would need to peak if we were to have any chance of meeting the accords goals. Heres an example of the math, from Stefan Rahmstorf and Anders Levermann. Under the most plausible scenario, they wrote, even if we peak in 2020 reducing emissions to zero within 20 years will be required, and that is an ungodly steep slope. But if we wait past 2020 its not a slope at all its just a cliff, and we fall off it. As the former UN climate chief Christiana Figueres put it when she launched Mission 2020, Everyone has a right to prosper, and if emissions do not begin their rapid decline by 2020, the worlds most vulnerable people will suffer even more from the devastating impacts of climate change.
Heres another way of saying it: the Intergovernmental Panel on Climate Change reported last autumn that if we hadnt managed a fundamental transformation of the planets energy systems by 2030, our chance of meeting the Paris temperature targets is slim to none. And anyone who has ever had anything to do with governments knows: if you want something big done by 2030, you better give yourself a lot of lead time. In fact, its possible weve waited too long: the worlds greenhouse gas emissions spiked last year, and given Trump, Bolsonaro and Putin - its hard to imagine we wont see the same depressing thing this year.
Which is why, I guess, its a good thing that 2020 is an election year in the US, and that the Democratic party finally seems willing to talk seriously about climate change. If it nominates Sanders or Warren, maybe the kind of aggressive approach that shakes things up is possible. But America is just one country; we also need to pressure our real global government, which has its headquarters not in Washington but in Wall Street. Last year banks increased their already staggering lending to the fossil fuel industry; if that continues theres no chance of turning this round in time.
(snip)
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