Carbon capture and storage: a story of how things can and do go wrong

In the Canadian province of Saskatchewan, Cenovus, an oil company is injecting 6,000 tonnes of CO2 underground. This allows Cenovus to claim that it is reducing its emissions, while recovering more oil from its fields. But these green claims are unwarranted, say local farmers. The CO2 captured and injected underground should, of course, stay there forever. Yet, there [...]

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