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Scientists have found new evidence that the Earth's natural feedback mechanism regulated carbon dioxide levels for hundreds of thousands of years. But they say humans are now emitting CO2 so fast that the planet's natural balancing mechanism cannot keep up.

An ever-present point of concern for the planet’s future welfare, worries over damaging CO2 emissions could soon be a thing of the past thanks to a University of Calgary climate change scientist who’s developed a machine capable of removing CO2 from the air. More pointedly, David Keith and a team of researchers working out of the University of Calgary have been diligently looking for a way to capture harmful greenhouse gas carbon dioxide (CO2) directly from the air by utilising “near-commercial” technology.