Discussion

50 years measuring the world’s cleanest air

strogonoff: It’s crazy to think that:— ambient atmospheric carbon dioxide concentration today has apparently never been this high since Miocene (15 megayears ago)[0]. It blasted past the previous maximum, from around 300 kiloyears ago, in early 1900s[1];— middle-aged people alive today experienced a 35% increase in ambient atmospheric carbon dioxide concentration within their lifetimes[2], and we continue as if it’s not really a cause of concern.[0] https://pubmed.ncbi.nlm.nih.gov/10963587/[1] https://nsidc.org/learn/ask-scientist/core-climate-history[2] https://www.climate.gov/news-features/understanding-climate/...