"Earth is warming at an unprecedented rate due to anthropogenic carbon dioxide emissions. This was recognised at the 2015 Paris Climate Convention (COP21) in 2015 who agreed to limit warming at 2°C or less. Emission reductions are essential to help mitigate further warming, but we are already likely to exceed this 2°C warming. In response, COP21 recognised that some form of ‘negative emissions’ is required to stay within the 2°C warming target."

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Gore, S.; Renforth, P.; Perkins, R. (2018): The potential environmental response to increasing ocean alkalinity for negative emissions. In: Mitig Adapt Strat Glob Change 47 (1), S. 199. DOI: 10.1007/s11027-018-9830-z.

"Increasing TA, however, did not significantly influence Corallina spp. primary productivity, respiration, or photophysiology. These results show that AOA may not be intrinsically detrimental for Corallina spp. and that AOA has the potential to lessen the impacts of ocean acidification. However, the experiment tested a single species within a controlled environment to constrain a specific unknown, the rate change of calcification, and additional work is required to understand the impact of AOA on other organisms, whole ecosystems, and the global carbon cycle."

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"Stephen Pacala, a professor of ecology and evolutionary biology at Princeton University, chaired the panel. In an interview with Yale Environment 360, he talks about why NETs are needed, what should be done to advance them, and why he believes that “direct air capture” technologies could come into widespread use within the next decade."

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"The Intergovernmental Panel on Climate Change’s interim report on global warming, released earlier this month, is jarring stuff. It describes the extensive environmental and economic damage that will befall Earth as global warming approaches 1.5 degrees Celsius, even as we speed on a trajectory that will warm the planet twice as much by the end of this century."

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