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1. As Arctic permafrost thaws it threatens to set off warming to trigger further thaw—a positive feedback. Raj Saha’s article features an overview and some animated graphics.

<a href="https://www.yaleclimateconnections.org/2018/02/the-permafrost-bomb-is-ticking/">

https://www.yaleclimateconnections.org/2018/02/the-permafrost-bomb-is-ticking/</a></p>

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2. Crushed silicate rocks absorb carbon as they weather to carbonate. Adding the dust while planting crops thus sequesters carbon as well as enhancing soil structure and fertility, replacing fertilizers and pesticides produced from fossil fuels.

<a href="https://www.climatescienceawarenesssolutions.org/blog-1/2018/2/19/rock-dust-in-farming-a-potential-strategy-to-help-close-the-climate-gap">

https://www.climatescienceawarenesssolutions.org/blog-1/2018/2/19/rock-dust-in-farming-a-potential-strategy-to-help-close-the-climate-gap</a></p>

<p>Clean Technica adds a useful five-minute video and some further explanation. <a href="https://cleantechnica.com/2018/02/19/transforming-agriculture-using-crushed-rock-can-slash-pesticide-use-increase-yields-promote-carbon-capture/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+IM-cleantechnica+%28CleanTechnica%29">

https://cleantechnica.com/2018/02/19/transforming-agriculture-using-crushed-rock-can-slash-pesticide-use-increase-yields-promote-carbon-capture/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+IM-cleantechnica+%28CleanTechnica%29</a></p>

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3. Rising heat makes it harder for airplanes to take off, bumpier to fly, easier to ice, and harder to land.

<a href="https://ensia.com/features/air-travel/">https://ensia.com/features/air-travel/</a></p>

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4. Electrical power promises to free aircraft design. CNN assembles a gallery of prospective designs, some electric, and some already in production.

<a href="https://www.cnn.com/travel/article/passenger-planes-future-look/">https://www.cnn.com/travel/article/passenger-planes-future-look/</a></p>

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5. Most plastics are made from petroleum. Super wood could replace that, for some uses—or, for that matter, it could replace structural steel. It could also improve solar cell efficiency and provide cheap, durable batteries.

<a href="https://www.sciencedaily.com/releases/2018/02/180207151829.htm">https://www.sciencedaily.com/releases/2018/02/180207151829.htm</a>  I wonder if termites enjoy super wood.</p>

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<p>6. Henry Red Cloud is leading the Oglalla Sioux to freedom from fossil fuels. <a href="https://news.mongabay.com/2018/02/red-clouds-revolution-oglalla-sioux-freeing-themselves-from-fossil-fuel/">

https://news.mongabay.com/2018/02/red-clouds-revolution-oglalla-sioux-freeing-themselves-from-fossil-fuel/</a> <br>

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