Tim Radford writes about the recent study on what it would take to have a fully-populated planet where everyone could lead a reasonably good life, doing so in a way that is completely sustainable. That of course is a far cry from what is actually going on today, and only a supreme optimist would think that such a transition is even possible, but it doesn’t hurt to spend a few minutes giving thought to the idea and hearing from those who have already given it a lot of thought. There are earlier reviews of the study in CL#1102 and 1104, which Tim here expands upon in his usual astute way.
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–In addition, the underlying report published by a science journal on February 5 originally appeared with a paywall. Tim’s post provides a link that somehow lifted that paywall, as shown here. The study for the most part is sans jargon and an interesting read.
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What is the true outlook for the “carbon capture and storage” (CCS) proposals that we often hear about? This appraisal by a senior energy adviser is not too encouraging. His conclusion: “One way to reduce coal’s impact is to capture, compress and bury its emissions – but it’s much simpler, cheaper and safer to simply leave the coal in the ground.”
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Is there a more practical way to capture carbon by pulling it directly out of the atmosphere via agriculture? This rather lengthy article advances that approach and in particular argues that we should not give up on the idea of BECCS, short for “bioenergy with carbon capture and storage,” which probably has more detractors than advocates. The need for negative emissions is real enough, but how to accomplish the deed is truly confounding.
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Offshore solar farms appear to have a promising future and will be tested. A consortium in the Netherlands has taken a close look at the idea and sees a number of advantages that are quite interesting. “The panels will be moored between existing wind turbines and connected to the same cables, transporting energy efficiently to end users…. Van Hoeken said he expects offshore solar energy to eventually be cheaper than offshore wind and mainland power sources, due mainly to a lack of land costs.”
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Prices for renewable energy fell sharply in 2017, setting record lows again and again. “Among the good news for consumers is that the lowest bids for solar dropped a remarkable 50% from records set in 2014 and 2015.” There is no longer any doubt about where this is going, and more and more countries are waking up to the benefits.
Carl