GLOBAL WARMING 'Global warming' is a term that refers to the impact of human activities on the environment, especially the burning of fossil fuels (coal, oil, and gas) and large-scale deforestation, which result in large-scale emissions of 'greenhouse gases,' the most significant of which is carbon dioxide. Infrared radiation released by the Earth's surface is absorbed by certain gases, which serve as blankets over the surface, keeping it colder than it would be otherwise. Changes in atmosphere are linked to this warming. The science behind the 'greenhouse effect,' which causes global warming, is well known. Numerical climate models that incorporate the fundamentals are used to gain a more accurate understanding. Many of the possible characteristics of the resulting climate changes can be established (for example, more frequent heat waves, increased rainfall, and increased frequency and severity of many extreme climate events). Significant uncertainties rem...