by Oliver Franklin-Wallis
Concrete is responsible for more than four percent of all global CO2 emissions. In the race to find alternatives, some companies are using it to sequester CO2 instead.
„‚The reality is that the forestry industry in Sweden are alone emitting more greenhouse gas emissions than all of Sweden’s terrestrial emission sources combined…‘ In this episode Alasdair MacEwen talks to Lina Burnelius of Protect the Forest Sweden about the Swedish forestry model and the threat that industry poses to biodiversity and the survival of ancient Forests.“
„Does the carbon footprint of Direct Air Capture negate its environmental benefits? Balint Simon discusses his paper, „Material flows and Embodied Energy of Direct Air Capture“. This episode was presented by (genuine expert) guest Reviewer 2 Matteo Gazzani, who even seemed to have read the paper! 10.33774/chemrxiv-2021-bpg5d.“
Buck, Holly Jean (2021): Ending Fossil Fuels. Why Net Zero is not Enough. New York, NY: Verso.
„Ending the Fossil Fuel Industry is the only credible path for climate policy. Around the world, countries and companies are setting net-zero carbon emissions targets. But what will it mean if those targets are achieved? One possibility is that fossil fuel companies will continue to produce billions of tons of atmospheric CO2 while relying on a symbiotic industry to scrub the air clean. Focusing on emissions draws our attention away from the real problem: the point of production. The fossil fuel industry must come to an end but will not depart willingly; governments must intervene. By embracing a politics of rural-urban coalitions and platform governance, climate advocates can build the political power needed to nationalize the fossil fuel industry and use its resources to draw carbon out of the atmosphere.“
„Scope 3 carbon emissions, or those not part of operations or under direct control, represent the majority of the carbon footprint for most companies, in some cases as high as 85% to 95%. As companies lay out ambitious carbon reduction targets and net-zero pledges for the decades ahead, slow progress on tracking Scope 3 emissions has climate experts worried.“
„It’s a more powerful greenhouse gas than carbon dioxide, and should be easier to control.“
„This column argues that an alternate type of policy, called ‚carbon shares‘, can limit emissions as efficiently as carbon taxes or caps while also properly incentivising negative emissions.“
Buylova, Alexandra, Mathias Fridahl, Naghmeh Nasiritousi, and Gunilla Reischl (2021): Cancel (Out) Emissions? The Envisaged Role of Carbon Dioxide Removal Technologies in Long-Term National Climate Strategies. Frontiers in Climate 3 (July). https://doi.org/10.3389/fclim.2021.675499.
“This paper explores the long-term low emission development strategies (LT-LEDS) of countries in order to map the role of CDR in addressing climate change.“
Zickfeld, Kirsten; Azevedo, Deven; Mathesius, Sabine; Matthews, H. Damon (2021): Asymmetry in the climate–carbon cycle response to positive and negative CO2 emissions. In Nat. Clim. Chang., pp. 1–5. DOI: 10.1038/s41558-021-01061-2.
“ It is commonly assumed that the climate–carbon cycle response to a negative CO2 emission is equal in magnitude and opposite in sign to the response to an equivalent positive CO2 emission. Here we test the hypothesis that this response is symmetric by forcing an Earth system model with positive and negative CO2 emission pulses of varying magnitude and applied from different climate states.“