Thus, the hypothesis of current global warming as a result of increased emission of carbon dioxide (greenhouse gases) into the atmosphere is not true. (scienceofdoom.com)
The current annual rise is nearly four times what it was in the 1950s, largely because of increased emissions from burning fossil fuels. (earthpolicy.org)
Combined, these effects could increase emissions by more than 100 % according to the study. (ucsusa.org)