greenhouse gases
Current Situation : Currently the heating effect of extra greenhouse gases since the start of the industrial revolution is equal to about . Thus the recent period has recorded parallel increases in concentration of carbon dioxide and average global temperature. As more greenhouse gases are put into the atmosphere the temperature will increase further. There are certain effects of a warmer Earth discussed more in optional section , which could accelerate the process, even if no more greenhouse gases are put into the atmosphere an unlikely prospect for the foreseeable future .