Climate & environment - Nov 25
by Staff
Click on the headline (link) for the full text. Many more articles are available through the Energy Bulletin homepage
This approach is challenged by the American thinker Sharon Astyk. In an interesting new essay, she points out that replacing the world's energy infrastructure involves "an enormous front-load of fossil fuels", which are required to manufacture wind turbines, electric cars, new grid connections, insulation and all the rest. This could push us past the climate tipping point. Instead, she proposes, we must ask people "to make short term, radical sacrifices", cutting our energy consumption by 50%, with little technological assistance, in five years. There are two problems: the first is that all previous attempts show that relying on voluntary abstinence does not work. The second is that a 10% annual cut in energy consumption while the infrastructure remains mostly unchanged means a 10% annual cut in total consumption: a deeper depression than the modern world has ever experienced. No political system - even an absolute monarchy - could survive an economic collapse on this scale. She is right about the risks of a technological green new deal, but these are risks we have to take. Astyk's proposals travel far into the realm of wishful thinking. Even the technological new deal I favour inhabits the distant margins of possibility. Can we do it? Search me. Reviewing the new evidence, I have to admit that we might have left it too late. But there is another question I can answer more easily. Can we afford not to try? No, we can't.
Friends of the Earth International (FoE) will argue in a report to be published on Thursday, that plans to slow the decline of forests, which would see rich countries pay for the protection of forests in tropical regions, are open to abuse by corrupt politicians or illegal logging companies. Forests store a significant amount of carbon and cutting them down is a major source of greenhouse gas emissions — currently this accounts for around 20% of the world's total. Deforestation also threatens biodiversity and puts the livelihoods of more than 60 million indigenous people who are dependent upon forests at risk. Working out a way to protect forests will be one of the key issues discussed next week in the United Nations climate change summit in Poznan, Poland, which marks the start of global negotiations to replace for the Kyoto protocol after 2012.
The agreement was brokered at the climate summit convened by California's ecosavvy governor, Arnold Schwarzenegger. Along with fellow governors from Illinois and Wisconsin, Schwarzenegger signed an agreement that could see carbon credits earned from forest protection in Indonesia or Brazil incorporated into US emissions trading schemes. Partly, this is significant simply because there haven't been very many large-scale international efforts to protect the world's dwindling rainforests – despite the huge climate change impact of tropical deforestation. The Brits and Norway have launched a big project in the Congo basin, but there are few other examples. (One looked promising last year when Guyana offered to hand over the protection of its forests to the British government, but that has so far come to nothing.) Mainly, though, this deal is significant because it's the first time – or at least the first I'm aware of – that carbon credits earned by protecting existing forests could be incorporated into large-scale emissions trading schemes. It means, in the simplest possible terms, that Indonesian or Brazilian forestry schemes will be able to get funded by American companies who want to produce carbon dioxide...
...Some people say we must learn to live with these effects, because it is an almost godgiven fact that we must burn all fossil fuels. But now we understand, from the history of the Earth, that there would be two monstrous consequences of releasing the CO2 from all of the oil, gas and coal, consequences of an enormity that cannot be accepted. One effect would be extermination of a large fraction of the species on the planet. The other is initiation of ice sheet disintegration and sea level rise, out of humanity’s control, eventually eliminating coastal cities and historical sites, creating havoc, hundreds of millions of refugees, and impoverishing nations. Species extermination and ice sheet disintegration are both ‘non-linear’ problems with ‘tipping points’. If the process proceeds too far, amplifying feedbacks push the system dynamics to proceed without further human forcing. For example, species are interdependent – if a sufficient number are eliminated, ecosystems collapse. In the physical climate system, amplifying feedbacks include increased absorption of sunlight as sea and land ice areas are reduced and release of methane, a powerful greenhouse gas, as permafrost melts. The Earth’s history reveals examples of such non-linear collapses. Eventually, over tens and hundreds of thousands of years, new species develop, and ice sheets return. But we will leave a devastated impoverished planet for all generations of humanity that we can imagine, if we are so foolish as to allow the climate tipping points to be passed. Urgency. Recent evidence reveals a situation more urgent than had been expected, even by those who were most attuned. The evidence is based on improving knowledge of Earth’s history – how the climate responded to past changes of atmospheric composition – and on observations of how the Earth is responding now to human-made atmospheric changes. The conclusion – at first startling, but in retrospect obvious – is that the human-made increase of atmospheric carbon dioxide (CO2), from the pre-industrial 280 parts per million (ppm) to today’s 385 ppm, has already raised the CO2 amount into the dangerous range. It will be necessary to take actions that return CO2 to a level of at most 350 ppm, but probably less, if we are to avert disastrous pressures on fellow species and large sea level rise. |
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