With the Earth having warmed a full degree Celsius since 1900, companies, environmentalists, and investors have gotten behind the idea that we can suck carbon out of the air with machines — although not everyone is buying in.
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The need to steadily wean our economies off carbon emissions has never been more urgent. Since international climate talks began three decades ago, global emissions have increased by 30% and continue to rise between 1% and 2% annually.
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