Carbon dioxide emissions are a major indicator of economic development, since they are generated largely by burning of fossil fuels for electrical power generation, for industrial processes, for domestic and commercial heating, and for the internal combustion engines of automobiles, trucks, buses, planes, and trains. Scientists have long known that carbon dioxide in the atmosphere increases the ability of atmosphere to retain heat, a phenomenon known as the greenhouse effect. While the greenhouse effect is a natural process (and life on earth as we know it would not be possible without it), many scientists are concerned that an increase in carbon dioxide in the atmosphere will augment this process, creating a global warming trend and a potential worldwide change of climate patterns. These climatological changes threaten disaster for many regions and their peoples in both the developed and less developed areas of the world. You will note from the map that the countries of the midlatitude regions generate extremely high levels of carbon dioxide per capita.