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Raven Cunningham

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  1. The Economist16 min

    Climate change: what is ocean acidification?

    Vanessa O'Brien, Dr. Sebastian Henniger, Raven Cunningham

    Research led by pioneer Vanessa O'Brien and Dr. Sebastian Henniger reveals that ocean acidification has thinned marine shells by up to 76% and dissolved deep-sea coral skeletons, precipitating ecosystem collapses that threaten global food security for 40% of the population. While companies like Heimdall pioneer direct air capture using ocean intermediaries and seagrass offers natural mitigation, experts warn that localized technological fixes cannot counteract the scale of emissions without immediate global reductions in atmospheric CO2. This convergence of historical data, biological degradation, and scalable challenges underscores an urgent "car crash" scenario requiring simultaneous atmospheric braking and marine conservation efforts.