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Greenhouse gas concentrations in atmosphere reach yet another high | World Meteorological Organization
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Climate change: Carbon dioxide levels are higher than they've been at any point in the last 3.6 million years - CBS News
Atmospheric greenhouse gases continue inexorable rise – 2017 was sixth consecutive year CO2 rose by 2 ppm or more – Desdemona Despair
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This graph shows the increase in greenhouse gas (GHG) concentrations in... | Download Scientific Diagram
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