Greenhouse Gas Emissions Soar in 2007
Last year atmospheric carbon dioxide levels increased [ ark | moreark] by 0.6 percent or 19 billion tonnes. Methane which is twenty-five times as damaging [ark] rose by 0.5 percent or 27 million tonnes after a decade of virtually no increase. Rising carbon dioxide concentrations [search], the primary driver of anthropogenic climate change, have now gone from 280 parts per million (ppm) in 1850 to 385 ppm. As we have pointed out, this is problematic given recent indications are 350 ppm is a critical threshold beyond which impacts are permanent and not fully known. Valuable time is being lost and the lack of serious attention to the global climate change planetary emergency is most troubling.