A report on the considerable effects of “short-lived climate pollutants.” These are non-CO2 gases and other particles that play a major role in climate change, especially in the Arctic, and are capable of being controlled by changes in human behavior. Because of their short lives, just reducing their emission is enough to quickly change existing levels in the atmosphere. The information on black carbon is unusually complete and worthy of attention. Also, the warming power of methane molecules is correctly stated as 86 times greater than CO2 on any given day, with air content steadily rising. (Its current rate of increase, about 10 ppb per year, continuing for a full century, would thus be equal in warming effect to adding an extra 86 ppm to the CO2 level.)
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A warning that climate change in the Arctic is accelerating and could very well continue to accelerate. The same thing is said about plastic pollution that is invading the Arctic, and more.
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From Tim Radford, a report summarizing the main content of three recent studies concerned with the unrelenting degradation of the world’s forests. Aside from deforestation by cutting, the mortality picture is broad and rates keep increasing, often enhanced by climate change. The story enumerates many of the indispensable values produced by forests, that are not widely appreciated.
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From National Geographic, an amazing list of things the Trump administration has done to wreck the environment, including climate of course. Too much to read, but scroll down through all the headlines. How can this not become an election issue of highest priority?
–One politician actually speaks out about climate change, week after week. The Senate chamber is generally empty when Sheldon Whitehouse speaks, but he does have a few supporters.
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What if BECCS is ruled out? This article by a professor from the University of London provides arguments with links to references showing why BECCS and other forms of negative emissions cannot be relied upon for mitigating climate change. (Kevin Anderson, often quoted in these letters, is one of the references.) The author thinks the Paris Agreement would need complete reconstruction, on terms that look quite unattractive. “If we take BECCS out of the equation, things get more serious. Rich nations will need to reduce their emissions by more than 10 percent per year. The tricky bit is that while we can manage some of this by investing heavily in renewable energy, it’s ultimately going to require that we step off the treadmill of endless economic growth and consumerism – and fast.” He then says a change of that magnitude would require an entirely new and different economic system. Oh boy.
–For those who want to pursue this subject more deeply, and in a more conventional manner, your attention is directed to some further reading built around the concept of “positive tipping points” toward the implementation of transformative solutions. Lots of big-name reference materials appear at the end.
Carl