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Carbon dioxide (CO₂) averaged about 430 ppm in June 2025 10 years ago June averaged about 403 ppm Preliminary data from @noaa.gov: gml.noaa.gov/ccgg/trends/

Phil Feldman, PhD

@philfeldman.com

I thought you might like this visualization - it's temperature readings from 13 years of bike rides mostly every day, mostly in Maryland:

16/7/25, 10:18 am0 reposts3 likes

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