Since the first Earth Day, the planet’s CO2 levels have gone off the rails

Photo caption: Earth’s atmosphere as viewed from space. Photo credit: NASA. Article by Mark Kaufman. Mashable –  updated April 21, 2023.

Update April 21, 2023: Earth’s atmospheric carbon dioxide levels averaged over 417 ppm in 2022, and even recently reached a daily reading of over 424 ppm. When this story first published in 2019, CO2 levels hovered around 412 ppm. They keep rising, relentlessly. […]

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