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may 15, 2019 - Atmospheric CO2 reached 411 ppm in May 2019 (in May 1958 in was 317.5)
Added to timeline:
2010s Environmental Timeline
By
Victor V. Motti
30 Dec 2019
0
0
1141
Date:
may 15, 2019
Now
~ 6 years and 5 months ago
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