“Global Carbon Dioxide Levels Just Hit A Disturbing New Threshold”

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Four hundred: it’s a number that will go down in climate history while also continuing to rise.

According to the National Oceanic and Atmospheric Administration (NOAA), 400.83 parts per million (ppm) was the average concentration of atmospheric carbon dioxide in March. This news from NOAA marks the first time that the entire planet has surpassed the 400 ppm benchmark for an entire month.

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About isabellew9873

My name is Isabelle Whitehead. I was a member of the Bolton School group on the Operation Wallacea 2015 expedition to Peru.

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