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Zack Labe
zacklabe.com
did:plc:nipoqrw2c5olbwkhy3bqxkiy
Carbon dioxide (CO₂) averaged about 427 ppm in December 2025
10 years ago December averaged about 402 ppm
Data available at gml.noaa.gov/ccgg/trends/
2026-01-11T20:57:29.338Z