Report: Carbon Dioxide Levels Are Set to Pass 400ppm—Permanently | Common Dreams | Breaking News & Views for the Progressive Community

Record carbon dioxide levels are set to surpass the symbolic threshold of 400 parts per million (PPM) this year and will likely never fall below that line again in our lifetimes, according to a new study published Monday in the journal Nature Climate Change.

Source: Report: Carbon Dioxide Levels Are Set to Pass 400ppm—Permanently | Common Dreams | Breaking News & Views for the Progressive Community

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