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<p>1. The prickly pear cactus is nutritious for man and beast, grows with little cultivation, and has a range of industrial uses. Our growing number of dry, hot areas may find them a useful crop.
<a href="https://cleantechnica.com/2017/11/27/prickly-pear-cactus-crop-climate-changed-future-researchers-argue-yes/">
https://cleantechnica.com/2017/11/27/prickly-pear-cactus-crop-climate-changed-future-researchers-argue-yes/</a></p>
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<p>2. The Koch brothers are backing a purchase of Time magazine. People, Fortune, and Sports Illustrated are part of the deal. The Kochs have for decades financed anti-climate science propaganda.
<a href="https://www.theguardian.com/us-news/2017/nov/27/koch-brothers-time-magazine-media-power">
https://www.theguardian.com/us-news/2017/nov/27/koch-brothers-time-magazine-media-power</a></p>
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<p>3. You may remember that a federal court had blocked US participation in the Kigali Amendment to the Montreal Protocol, intended to cut use of hydrofluorocarbons, which are otherwise due to constitute 10% of our greenhouse gas emissions by 2050. The treaty
is now in effect internationally. The US could participate if congress were to ratify it; the Trump administration is submitting the amendment for ratification.
<a href="https://insideclimatenews.org/news/27112017/global-warming-hfcs-trump-refrigerator-air-conditioning-montreal-protocol-slcp-climate-change">
https://insideclimatenews.org/news/27112017/global-warming-hfcs-trump-refrigerator-air-conditioning-montreal-protocol-slcp-climate-change</a>
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<p>I generally don’t list pending legislation, but this treaty is sort of already enacted. I plan to mention it again when the US congress passes it. Air travel, ocean shipping, and cement production each contribute about 5% of our emissions; HFCs are as bad
as two of those combined. Or, you may think of them as about as large an emissions source as agriculture (excluding land use change and forestry).
<a href="https://www.c2es.org/content/international-emissions/">https://www.c2es.org/content/international-emissions/</a> </p>
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<p>4. A heated object radiates heat, which heats the surrounding air, returning the heat to the object. A narrow band of infrared radiation escapes, though, leaving the object cooler than the surrounding air. Mirrors tuned to this band can augment refrigeration
and air conditioning by about 20% in buildings while exhausting heat to the upper atmosphere or to space.
<a href="https://www.technologyreview.com/s/609321/how-high-tech-mirrors-can-send-heat-into-space/?utm_source=MIT+Technology+Review&utm_campaign=f1aad61515-weekly_roundup_2017-11-30_edit&utm_medium=email&utm_term=0_997ed6f472-f1aad61515-154060389&goal=0_997ed6f472-f1aad61515-154060389&mc_cid=f1aad61515&mc_eid=fc22084f2f">
https://www.technologyreview.com/s/609321/how-high-tech-mirrors-can-send-heat-into-space/?utm_source=MIT+Technology+Review&utm_campaign=f1aad61515-weekly_roundup_2017-11-30_edit&utm_medium=email&utm_term=0_997ed6f472-f1aad61515-154060389&goal=0_997ed6f472-f1aad61515-154060389&mc_cid=f1aad61515&mc_eid=fc22084f2f</a></p>
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<p>5. An Oxford U study warns that we have failed to include considerations of the wealth of nature in our economic conceptions when there is no value to be had without it.
<a href="https://cleantechnica.com/2017/11/29/oxford-economists-warn-vanishing-wealth-nature/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+IM-cleantechnica+%28CleanTechnica%29">
https://cleantechnica.com/2017/11/29/oxford-economists-warn-vanishing-wealth-nature/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+IM-cleantechnica+%28CleanTechnica%29</a> <br>
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