Greenhouse gas levels pass symbolic 400ppm CO2 milestone
Monitoring stations in the Arctic detect record levels of carbon dioxide, higher than ever above 'safe' 350ppm mark The world's air has reached what scientists call a troubling new milestone for carbon dioxide, the main global warming pollutant. Monitoring stations across the Arctic this spring are measuring more than 400 parts per million of the heat-trapping gas in the atmosphere. The number isn't quite a surprise, because it's been rising at an ... Full Story »
Posted by Jack Powers
