Global warming also referred to as climatic change is the observed rise in temperature of the Earth and its related effects.Emission of green house gases, carbon di-oxide, methane, nitrous oxide due to human influence will make temperature of the earth to rise by 0.7 to 1.7 degree celsius. This also may increase if the emission of green house gases and other parameters causing climatic changes like reducing forest area, insufficient plantations,industrial activities poluting the environment(land,water and sky) are not curtailed; which may lead to further rise of 2 to 3 degrees by the end of the century from the current expected rise of 0.7 to 1.7 degree celcius. This will cause retraction of glassiers, and other natural calamities since the balance maintained by the Nature is disturbed and the natural resources of protection get depleted.
Therefore, academicians are encouraging and propagating to develop,promote and practice green and clean technology to avoid green house gas and other poisonous gas emissions.
Source: National Science Academies of Industrialized Nations.