Tag Archives: james butler

World’s carbon dioxide concentration teetering on the point of no return

Future in which global concentration of CO2 is permanently above 400 parts per million looms

May 12, 2016 — The world is hurtling towards an era when global concentrations of carbon dioxide never again dip below the 400 parts per million (ppm) milestone, as two important measuring stations sit on the point of no return. Continue reading World’s carbon dioxide concentration teetering on the point of no return