Global Warming and Greenhouse Effect

A big part of the scientific community says that the increase of the concentration of pollutants, originated by humans, in the atmosphere is causing the greenhouse effect. The Earth receives radiation emitted by the sun and returns most of it into space by the form of heat radiation. The air pollutants retain a part of that radiation that would be reflected into space, under normal conditions. That retained part cause a significant increase of the global warming. It is called the greenhouse effect by absorption, that by air, will prevent infrared emissions of escaping into outer space.