18.02.2019

# Media

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Chatham House: Cool idea or hi-tech madness?

"As the threat from climate change looms ever larger, growing attention is being paid to proposals that sound as if they come straight from a sci-fi novel. One idea is to spray the stratosphere with particulates to reflect sunlight, thus reducing the temperature of planet Earth."

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18.02.2019

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Legal Planet: Does the Fossil Fuel Industry Support Geoengineering?

"Geoengineering is controversial in the climate change community, and understandably so. Proposed interventions like negative emissions technologies (a.k.a. carbon dioxide removal) and solar geoengineering (a.k.a. solar radiation management or SRM) involve large-scale intervention in the climate system that could have adverse physical or social impacts. At the same time, some geoengineering methods could substantially reduce climate change."

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18.02.2019

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Project Syndicate: Geoengineering is a Dangerous Distraction

"A growing number of people are now considering the once-unthinkable strategy of geoengineering our way out of the climate crisis. Proposed approaches vary widely, but all share a few key features: they are technologically uncertain, environmentally risky, and more likely to accelerate the climate crisis than to reverse it."

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06.01.2019

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E&E News: Here's the research to watch in 2019

"Amid concern about the Paris Agreement's rapidly approaching global climate targets, geoengineering is a growing area of focus. One widely discussed, but highly controversial, hypothetical proposal involves spraying reflective aerosols into the atmosphere to beam sunlight away and cool the planet. It's called solar radiation management, or solar geoengineering."

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06.01.2019

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The Guardian: Katharine Hayhoe: 'A thermometer is not liberal or conservative'

"One solution being discussed is the idea of deliberately geoengineering the planet to remove carbon dioxide from the atmosphere and/or cool the planet. I believe it is important to discuss and study these technologies very thoroughly, because implementing some of them, like solar radiation management [spraying particles into the air to simulate a volcanic eruption and block some of the sunlight reaching Earth], is extremely risky."

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05.12.2018

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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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