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Monthly Global CO2 Average Concentration Passes Symbolic Threshold | World Meteorological Organization
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Global monthly gridded atmospheric carbon dioxide concentrations under the historical and future scenarios | Scientific Data
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7. Is the current level of atmospheric CO2 concentration unprecedented in Earth's history? Answer | Royal Society
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Evolution of global temperature (black), atmospheric CO2 concentration... | Download Scientific Diagram
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Global CO2 levels reach a new record high in 2020 despite the industry and traffic slowdown during Covid-19 pandemic
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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
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Global carbon dioxide growth in 2018 reached 4th highest on record | National Oceanic and Atmospheric Administration
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