This book discusses the global greenhouse gas emissions which cause the global warming in the atmosphere. For the increase of global warming the ice in two poles, Himalayas and Antarctica are melting, as a result the ocean levels are raising. On the basis of present global warming, scientists forecast that most of the coastal areas will be submerged by 2050 and the living organisms in land and water are in dangerous position and some species has already extinct and will extinct in future from the nature if global warming cannot be controlled. According to International Energy Agency data, the USA and China together emit approximately 40% of global CO2 emissions, and about 35% of total greenhouse gases. Many governments in developed countries have called for greenhouse gas emissions to be cut by up to 80% by 2050 in order to stabilize atmospheric concentrations of greenhouse gas.