11 votes Carbon dioxide levels hit record peak in May Posted June 18, 2019 by Autoxidation Tags: climate change, greenhouse gases, emissions.carbon, carbon dioxide, source.noaa https://research.noaa.gov/article/ArtMID/587/ArticleID/2461/Carbon-dioxide-levels-hit-record-peak-in-May Link information This data is scraped automatically and may be incorrect. Word count 728 words