Hi Erik, I read the article you had linked to. The article is NOT promoting the idea that humans contribute an insignificant amount of CO2 into the atmosphere. It is debunking the myth that humans are contributing too little CO2 into the atmosphere. What it actually states, in a nutshell, is that although the total output of human CO2 is insignificant compared to natural sources of CO2, it is stating that the amount produced by humans is has tipped the balance of CO2 in the atmosphere. The natural carbon sinks ie, the oceans, limestone etc, are over saturated, and cannot hold the amount of extra CO2 humans are pumping into the atmosphere. Again... one must really read and understand what is being represented. But thanks for the article. Jon