Introduction
There is considerable scientific evidence already in place to demonstrate that climate change is happening in various parts of the globe and the dissenting voices of skeptics (e.g., those who question the authority and credibility of existing scientific evidence on climate change) are steadily evaporating. According to the Intergovernmental Panel for Climate Change (IPCC, 2007), "climate change refers to a statistically significant variation in either the mean state of the climate or in its variability, persisting for an extended period (typically decades or longer). Climate change may be due to natural internal processes or external forcing, or to persistent anthropogenic changes in the composition of the atmosphere or in land use." The problem of 'anthropogenic aggression' of the atmosphere is intimately related to the way energy is produced and used (Goldemberg, 2004). For example, air pollution and acid rain are largely due to the burning of fossil fuels and urban transportation. Greenhouse warming and climate change are mainly due to the burning of fossil fuels.