Guo, Rui; Wang, Jiaoyue; Bing, Longfei; Tong, Dan; Ciais, Philippe; Davis, Steven J. et al. (2020): Global CO2 uptake of cement in 1930–2019. In Earth System Science Data. DOI: 10.5194/essd-2020-275.

"We adopted a comprehensive analytical model to estimate the amount of CO₂ that had been absorbed from 1930 to 2019 in four types of cement materials including concrete, mortar, construction waste and cement kiln dust (CKD). Besides, the process CO₂ emission during the same period based on the same datasets was also estimated."

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"This literature – even when it questions the assumptions and feasibility constraints underpinning large-scale CDR – tends to frame the various CDR approaches as novel and untested, and mostly focuses on hypothetical future scenarios. Yet CDR has a longer and, in many ways, more tangible history than this framing suggests – the lessons of which are largely overlooked in much of the current debate."

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"These scientists and inventors set out to change the planet with these out-of-the-box ideas."

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Scheffran, Jürgen (2019): The entwined Cold War roots of missile defense and climate geoengineering. In Bulletin of the Atomic Scientists 75 (5), pp. 222–228. DOI: 10.1080/00963402.2019.1654256.

"The first approach to the nuclear and climate threat focuses on arms control, non-proliferation and disarmament and on greenhouse gas emission reductions and mitigation. The second approach involves active defense: in the nuclear realm, missile defenses against nuclear-armed delivery systems; for climate change, geoengineering that removes carbon dioxide from the atmosphere or changes the Earth’s radiation balance."

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