17.07.2019

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Forum for Climate Enigneering Assessment: When essential research might be a bad thing. The carbon removal research dilemma. (Blogpost)

"The UK recently adopted a legislative 2050 target for ‘net-zero’ climate-changing emissions. Other countries are also moving towards similar goals. Such targets are hugely welcome in the face of growing climate change impacts. Yet delivering ‘net-zero’ depends not only on accelerated mitigation, but also critically on the development and deployment of carbon removal techniques. This creates something of a dilemma."

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17.07.2019

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RealClimate: Can planting trees save our climate?

"n recent weeks, a new study by researchers at ETH Zurich has hit the headlines worldwide (Bastin et al. 2019). [...] Unfortunately, it’s also too good to be true. Because apples are compared to oranges and important feedbacks in the Earth system are forgotten. With a few basic facts about the CO2 increase in our atmosphere this is easy to understand. Mankind is currently blowing 11 billion tonnes of carbon (gigatonnes C, abbreviated GtC) into the air every year in the form of CO2 – and the trend is rising."

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15.07.2019

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Süddeutsche Zeitung: "Too good, to be true" (German)

German article on CE

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15.07.2019

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Phys.org: Exaggerating how much carbon dioxide can be absorbed by tree planting risks deterring crucial climate action

"Planting almost a billion hectares of trees worldwide is the "biggest and cheapest tool" for tackling climate change, according to a new study. The researchers claimed that reforestation could remove 205 gigatons of carbon dioxide (CO2) from the atmosphere—equivalent to about 20 years' worth of the world's current emissions. This has been criticized as an exaggeration. It could actually be dangerous."

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15.07.2019

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Union of Concerned Scientists: Can Trees, Oceans and Giant Carbon Sucking Machines Save Us from Climate Catastrophe? (Blog)

"As we confront ever more obvious impacts of a warming world, we must immediately tackle the political and technical challenges of reducing the pollution causing climate change. And, just as actively, seek ways to remove, store and manage carbon to bring our climate back into balance."

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15.07.2019

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Phys.org: Breaching a 'carbon threshold' could lead to mass extinction

"Daniel Rothman, professor of geophysics and co-director of the Lorenz Center in MIT's Department of Earth, Atmospheric and Planetary Sciences, has found that when the rate at which carbon enters the oceans pushes past a certain threshold—whether as the result of a sudden burst or a slow, steady influx—the Earth may respond with a runaway cascade of chemical feedbacks, leading to extreme ocean acidification that dramatically amplifies the effects of the original trigger."

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08.07.2019

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BBC Science Focus: Could geoengineering cause a climate war?

"If cutting greenhouse gas emissions isn’t enough, is it time for a plan B? Recent times have seen a surge of interest in geoengineering: China has recently embarked on a substantial research plan, while in the US, Prof David Keith of Harvard University is planning to launch a high-altitude balloon this year to test the feasibility of spraying reflective particles into the stratosphere."

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08.07.2019

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E&E News: Risks of Controversial Geoengineering Approach “May Be Overstated”

"Some scientists are finding fewer risks related to solar geoengineering than determined in earlier studies, adding emphasis to calls for a global body to monitor proposals that would inject substances into the upper atmosphere to reflect sunlight away from Earth."

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08.07.2019

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Global Ground: Is it time for a radical new approach to fighting global warming? (Podcast)

"One may call it a crazy idea. Someone else may say its an expression of desperation about the lack of action on climate change. Despite the regretful tone, however, these comments are from researchers who advocate further study into whether climate engineering could be part of the answer to alleviate global warming."

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08.07.2019

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Energypost.eu: A cheap Carbon Capture breakthrough? MOF molecular cages that trap CO2

"Carbon Capture is the Transition’s great unknown. Big targets have been set but nobody knows how we’re going to meet them. It’s clear we need utility-scale breakthroughs, and fast. And cheap. We take a look at one example of cutting edge research that could deliver both."

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