Scientists confirm record highs for 3 most important heat-trapping gases
The global concentration of #CO2, the most important and prevalent of the #GreenhouseGases emitted by human activity, rose to an average of 419 ppm in the atmosphere in 2023 while #methane a powerful if shorter-lasting greenhouse gas, rose to an average of 1922 ppb. Levels of #NitrousOxide, the third most significant human-caused warming emission, climbed slightly to 336 parts per billion.
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