The global warming (or global warming, global reheating or disorder climatique2,3) is the phenomenon of increase of the oceanic average temperatures and the air, leads(infers) by the quantity of heat trapped in the earth's surface, measured for several decades, as well as the rate of CO2. This term indicates(appoints) collectively the global reheating observed from(since) the beginning of the xxe century.

In 1988, the UNO creates the intergovernmental Group of experts on the evolution of the climate ( GIEC) to synthesize the scientific studies on the climate. In his(her,its) fourth report(relationship), in which participated more than 2 500 scientists of 130 pays4, the GIEC asserts that the global warming since 1950 is very probablementc 1 due to the increase of the greenhouse gases of anthropological origin