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First month ever in recorded history with CO2 > 410 ppm #Talanoa4ambition #TalanoaDialogue pic.twitter.com/mpLFlfqbkOâ CO2 earth (@CO2_earth) 2018å¹´5æ3æ¥ The Keeling Curveãµã¤ãã«ããã¨ã April monthly average exceeds 410 parts per millâ¦