05.12.2018

# Media

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The Conversation: Time is running out on climate change, but geoengineering has dangers of its own

"We have just 12 years left to reduce emissions and achieve the Paris Agreement’s highest ambition of limiting warming to 1.5°C. We have been warned, repeatedly, of the high stakes of our present climate gamble. If we continue on our current course, radical solutions are going to be needed sooner rather than later."

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12.11.2018

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LegalPlanet: Solar Geoengineering and International Law

"A couple weeks ago, I introduced solar geoengineering (see also 1, 2, 4 in the series). This is a set of proposed technologies that would reduce climate change by blocking or reflecting a small portion of incoming sunlight. It appears that it would be effective in reducing climate change, inexpensive, rapid, and technically feasible. It would also pose environmental risks and social challenges. Here, I offer a brief overview of the relevant legal landscape."

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04.11.2018

# New Publications

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Emmerling, J.; et al. (2018): Exploration of the interactions between mitigation and solar radiation management in cooperative and non-cooperative international governance settings

Emmerling, J.; Tavoni, M. (2018): Exploration of the interactions between mitigation and solar radiation management in cooperative and non-cooperative international governance settings. In: Global Environmental Change 53, S. 244–251. DOI: 10.1016/j.gloenvcha.2018.10.006.

"This paper provides an evaluation of the risks of excess climate engineering due to lack of international cooperation. Using both an analytical and numerical model, we show how lack of cooperation leads to overprovision of climate engineering above what would be socially optimal. The regions with the highest climate change impacts deploy climate engineering at the expenses of the others. Yet, these poor countries still host the majority of the residual climate change impacts. These results suggest the importance of embedding climate engineering in the international climate policy debate."

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24.10.2018

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Jacobin: Against Geoengineering

"The dire conclusions of the report and the daunting task we have before us might make some think that geoengineering — actively intervening in planetary systems to keep temperatures down — is the only option to prevent catastrophic climate change. But the risks that come with geoengineering are also huge and could even worsen the climate imbalance. They aren’t worth it."

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08.10.2018

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AllAfrica: As Climate Risks Rise, Scientists Call for Rules On Solar Engineering

"London — Technologies to reflect some of the sun's rays away from Earth, as a way to cool future runaway climate change, are moving closer to becoming a reality, and rules are needed now to govern them, scientists and other experts said on Monday."

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08.10.2018

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Thomas Reuters Foundation News: Scientists champion forests as 'unsung hero' of climate action

"The natural processes by which forests suck in and store carbon help reduce levels of planet-warming carbon dioxide in the atmosphere - and forests also underpin key parts of the world's economy, the scientists said."

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30.09.2018

# New Publications

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Dietz, S.; et al. (2018): The Economics of 1.5°C Climate Change

Dietz, S.; Bowen, A.; Doda, B.; Gambhir, A.; Warren, R. (2018): The Economics of 1.5°C Climate Change. In: Annu. Rev. Environ. Resour. 43 (1). DOI: 10.1146/annurev-environ-102017-025817.

"Setting off with higher emissions will make 1.5°C unattainable quickly without recourse to expensive large-scale carbon dioxide removal (CDR), or solar radiation management (SRM), which can be cheap but poses ambiguous risks society seems unwilling to take. Carbon pricing could reduce mitigation costs substantially compared with ramping up the current patchwork of regulatory instruments. Nonetheless, a mix of policies is justified and technology-specific approaches may be required. It is particularly important to step up mitigation finance to developing countries, where emissions abatement is relatively cheap."

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30.09.2018

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EurekAlert: Now is the time to answer questions about climate engineering disease impacts

"Radical solutions to climate change might save lives, but a commentary in the October 2018 issue of the journal Nature Climate Change calls for caution because geoengineering still lacks a "clean bill of health.""

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30.09.2018

# New Publications

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Carlson, C.; et al. (2018): Climate engineering needs a clean bill of health

Carlson, C.; Trisos, C. (2018): Climate engineering needs a clean bill of health. In: Nature Climate change 8 (10), S. 843–845. DOI: 10.1038/s41558-018-0294-7.

"Climate change will almost certainly cause millions of deaths. Climate engineering might prevent this, but benefits — and risks — remain mostly unevaluated. Now is the time to bring planetary health research into climate engineering conversations."

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25.09.2018

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Harvard University Blog: Debating Solar Geoengineering on the Kialo Visual Reasoning Platform

"Solar geoengineering poses many possibilities but comes with a whole range of complex considerations. Debates on the topic, especially online, are often messy and governed by emotions. In this blogpost, we introduce recent work on a visual reasoning platform called Kialo to help represent the multiple considerations in a reasoned way."

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