June 2018

04.06.2018

# Media

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ABC News: Geoengineering: The quick, and potentially catastrophic, fix for climate change

"Proposals for geoengineering projects sound like something out of science fiction. Pumping aerosols into the upper atmosphere to make clouds more reflective, for example. Or fertilizing oceans with iron to promote the growth of plankton and algae so they consume more carbon dioxide."

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04.06.2018

# Media

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New Food Economy: Carbon farming isn’t worth it for farmers. Two blockchain companies want to change that

"“There’s really no value in carbon and the best practices that improve soil,” says Torri Estrada, executive director of the Carbon Cycle Institute, which advocates for carbon farming and regenerative land management. “I think if there was, farmers would be integrating that, but there isn’t really. Like one of our farmers said, ‘If I got paid to grow carbon I would grow the heck out of it.'” Technically, many farmers can already get paid to “grow carbon”—they just don’t get paid very much, either because the value of the credit is too low, or because intermediaries and fees eat into their profit margins."

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04.06.2018

# New Publications

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Ott, Konrad (2018): On the Political Economy of Solar Radiation Management

Ott, Konrad (2018): On the Political Economy of Solar Radiation Management. In Front. Environ. Sci. 6, p. 29. DOI: 10.3389/fenvs.2018.00043.

"The paper concludes that the U.S. economic system has strong affinities to SRM supported by an emerging agency network that tries to establish a pro-SRM narrative and launch SAI research initiatives. There is recent evidence that SRM has found support from policy makers. To supporters of “green” variants of capitalism, the main claims of the article provide reasons against SAI-research. The article finishes with some remarks why SAI-research should be conditional."

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04.06.2018

# New Publications

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Attfield, Robin (2018): The Ethics of Geo-engineering

Attfield, Robin (2018): The Ethics of Geo-engineering. In : Proceedings of the XXIII World Congress of Philosophy: Philosophy Documentation Center, pp. 23–27.

"Some favor this measure as a quick and inexpensive replacement for mitigation; but its possible side-effects and lack of an exit-strategy mean that its deployment would be misguided, and that researching it might undermine determination to reach a mitigation agreement. Some forms of Carbon Dioxide Removal (seeding the oceans with iron filings to grow carbon-reducing algae) face similar objections, but others, like afforestation and Carbon Capture and Storage (itself not yet operative), comprise acceptable enhancements of current technology. Even if they do not buy time, these measures could beneficially supplement a global Climate Change agreement."

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04.06.2018

# Media

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Washington Post: The inconvenient truth about carbon capture

"There is no silver bullet: no single technology is likely to provide all the CO2 removal that is required. All technologies have economic and environmental constrains. They are dependent upon the establishment of policy incentives. We therefore need to explore smart technology portfolios where multiple CO2 removal technologies are deployed at more modest scales. Only diversified portfolios can help us to hedge the risks associated with CO2 removal."

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04.06.2018

# New Publications

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Hester, Tracy; Gerrard, Michael B. (2018): Going Negative. The Next Horizon in Climate Engineering Law

Hester, Tracy; Gerrard, Michael B. (2018): Going Negative. The Next Horizon in Climate Engineering Law. In Natural Resources & Environment 32 (4), pp. 3–7.

"Specifically, negative emissions technologies would directly remove greenhouse gases (GHGs) from the ambient air and help to remove accumulated atmospheric carbon dioxide (CO2) caused by historical emissions. After over a decade of debate, substantive research and planning associated with negative emissions technologies and solar radiation management have begun to inch forward. But this movement is happening in unexpected ways, and some of the most important decisions and commitments are occurring outside of the spotlight. "

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04.06.2018

# Media

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Physics World: What’s the outlook for bioenergy with carbon capture and storage?

"Simply ramping up the deployment of bio-energy with carbon capture and storage (BECCS) may not be enough to guarantee an acceleration in meeting climate targets. Analysis based on a complex set of Earth system models shows that achieving net negative carbon dioxide emissions is also strongly linked to the geographical location of bio-energy feedstock. The study draws attention to the importance of maintaining tropical forests and their vital role as carbon sinks. Allowing deforestation in the tropics to facilitate large-scale BECCS appears to tip the balance towards higher atmospheric concentrations of carbon dioxide near the end of the century."

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01.06.2018

# New Publications

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Brethomé, Flavien M.; et al. (2018): Direct air capture of CO2 via aqueous-phase absorption and crystalline-phase release using concentrated solar power

Brethomé, Flavien M.; Williams, Neil J.; Seipp, Charles A.; Kidder, Michelle K.; Custelcean, Radu (2018): Direct air capture of CO2 via aqueous-phase absorption and crystalline-phase release using concentrated solar power. In Nat. Energy 98. DOI: 10.1038/s41560-018-0150-z.

"Here, we report an approach to direct air capture, at the laboratory scale, using mostly off-the-shelf materials and equipment. First, CO2 absorption is achieved with readily available and environmentally friendly aqueous amino acid solutions (glycine and sarcosine) using a household humidifier. The CO2-loaded solutions are then reacted with a simple guanidine compound, which crystallizes as a very insoluble carbonate salt and regenerates the amino acid sorbent. Finally, effective CO2release and near-quantitative regeneration of the guanidine compound are achieved by relatively mild heating of the carbonate crystals using concentrated solar power."

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01.06.2018

# New Publications

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Elizabeth L. Chalecki; Lisa L. Ferrari (2018): A New Security Framework for Geoengineering

Elizabeth L. Chalecki; Lisa L. Ferrari (2018): A New Security Framework for Geoengineering. In Strategic Studies Quarterly 12 (2), pp. 82–106.

"We argue that, lacking explicit scientific or legal guidance, just war theory provides a useful normative framework for restraining the use of environmental force. Modifying just war theory into “just geoengineering theory” will provide ethical standards for security decision makers as they consider whether or how geoengineering should be used."

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01.06.2018

# New Publications

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Mahajan, Aseem; et al. (2018): Fast, cheap, and imperfect? US public opinion about solar geoengineering

Mahajan, Aseem; Tingley, Dustin; Wagner, Gernot (2018): Fast, cheap, and imperfect? US public opinion about solar geoengineering. In Environmental Politics 25 (4), pp. 1–21. DOI: 10.1080/09644016.2018.1479101.

"There is little understanding about how the public will respond to such tradeoffs. To address this, a 1000-subject nationally representative poll focused on solar geoengineering was conducted as part of the Cooperative Congressional Election Study (CCES) of the US electorate in October–November 2016. The importance that individuals place on solar geoengineering’s speed and cost predicts their support for it, but there is little to no relationship between their concerns about its shortcomings and support for its research and use. Acquiescence bias appears to be an important factor for attitudes around solar geoengineering and moral hazard."

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