Arctic sea ice loss is not all due to climate change. According to a new study, “Sea ice loss since 1979 has increased due to natural variability; observations show more Arctic sea ice loss than the climate models average…..Natural swings in the Earth’s climate contribute to about 40 percent to 50 percent of the observed multi-decadal decline in Arctic sea ice.” The study has an explanation for the cause, but does not predict what future swings may be like. There should be some possibility that the natural swing could reverse and begin to offset some of the future losses caused by humans.
https://phys.org/news/2018-11-natural-earth-climate-contribute-arctic.html
https://phys.org/news/2018-11-natural-earth-climate-contribute-arctic.html
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There are uncertainties about how much carbon is being stored as trees and other plants grow. Recent studies have found conflicting results, as discussed in this review. This kind of information pales in comparison with what might be accomplished if humans got serious about rebuilding whole forests and also planting trees at random in any other spots that might be open and available.
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A giant volcanic mountain in British Columbia is being destabilized by its shrinking glacier. Mount Meager exploded 2400 years ago and could do so again, while massive landslides are even more likely. This story from CBS News BC has wonderful photos plus a quick video that should not be missed. From the investigator, “What I find spectacular about volcanoes is that they ground you as a human being and make you realize how inconsequential you are.”
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“We’re All Climate Catastrophe Preppers Now” (Bloomberg). With all the disasters that are going on this columnist thinks people are starting to pay attention, and have begun formulating a range of long-term plans. Along with the more personal things, his main focus is on the potential for financial losses that loom almost everywhere one looks. He slips in one very good point—“The more global temperatures rise, the more people stand to lose — and unlike a recession there’s no quick rebound from climate change.”
https://www.bloomberg.com/opinion/articles/2018-11-05/doomsday-investing-in-a-time-of-climate-change
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Revelations about the energy cost of producing bitcoins (The Guardian). “The amount of energy required to “mine” one dollar’s worth of bitcoin is more than twice that required to mine the same value of copper, gold or platinum.” All that energy must be paid for, but is entirely wasted, the total amount of which in one year is estimated to be about equal to the power consumption of Ireland. No reason is given for why there is a demand for bitcoins or any other cryptocurrency.
Carl