A new world record low bid contract for supplying solar electricity (Renew Economy). In an auction held in Portugal the low bid came in at a price equal to US$16.54 per mWh, which translates into just 1.654 cents per kWh at the wholesale level. (I believe without storage that should still be required.) Portugal already gets 56.4% of its energy from renewable sources and has yet higher ambitions.
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https://reneweconomy.com.au/portugal-lands-world-record-breaking-solar-price-how-did-it-do-it-86269/
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Another bit of good news—the well-funded climate denial movement is falling apart (Vice). The author of this piece did good research into a subject that is usually obscure. Democrats still have to find a way to assure their taking maximum advantage of the situation—quickly.
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Plants are still “fattening up” on excess CO2 liberated by humans, but there will be limits (EcoWatch). This story was drawn from several different research studies, links provided, bringing considerable clarity to a subject that defies prediction. One study group performed 138 experiments to learn that total plant biomass around the globe is capable of expanding by another 12% or so by the year 2100, equivalent to 59 +/-13 petagrams (or gigatons) of carbon. Humans currently account for adding about 10 PgC from CO2 emissions into the air per year, which will supposedly soon be reduced.
–Here is a link to the Abstract of the study I mentioned:
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A feature article from National Geographic takes an in-depth look at the accelerated pace of permafrost decomposition. The facts presented here go well beyond the rather conservative projections that were commonly expressed just a few years ago, when there were hopes that new growth by vegetation could swallow a large share of the carbon to be released when permafrost thaws. That way of thinking will need to be revised. The numbers.you will find in this article (or its links) need to be compared with those found in the previous story, where vegetation growth is seen to have plenty of challenges just trying to keep up with everyday human activities, before hitting a possible wall.
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Tropical African lands emitted “unexpectedly large” quantities of CO2 to the atmosphere in 2016 (Carbon Brief). New research based on an analysis of satellite information has finally solved the mystery of where all the extra CO2 emissions came from in that year. Typically the lands across this region absorb a large net amount of carbon each year, but during the major 2016 El Nino, in the presence of heat, drought, deforestation, fires and so on, they turned around and gave off even more carbon than did the entire US. This extremely valuable information about land-based activities has widespread application everywhere, and not just in El Nino years when natural circumstances are so exaggerated.
Carl