Global warming

Global warming is the phenomenon of high temperature in the environment as a result of a change in the flow of thermal energy from the environment and to them. Often called this name on the phenomenon of global warming than normal. Has increased the global average air temperature at the surface of the earth b 0.74 ± 0.18 ° C per cent during the year ended 2005.

According to the International Committee on Climate Change IPCC, "the most significant increase in the rate of global temperature since the mid-twentieth century, seems largely a result of increased greenhouse gases emitted by the activities of humans.

Despite this fact, but scientists argue that air pollution may have been a contributing factor in the fight against global warming, by encouraging plants to consume more gas than carbon dioxide.

And new scientific research indicates that, since the sixties, increases in pollutants in the ground to raise the level of plant productivity in general, and in some cases, to about 25%.

The research, published in the journal "Nature" scientific, that, according to these estimates, this means that the ground soil has absorbed about 10% of carbon dioxide.

It is said that there was a presumption that the common plants grow better in a sunny atmosphere is clean, but the scientists say that this assumption is not always correct.

The research showed that forest and agricultural crops can grow and thrive in different conditions Kalegwae cloudy, and the presence of particle pollutants in the atmosphere, and the lack of emergence of the sun, which is paid to increase tawarruq, it also can stimulate the process of photosynthesis, a process that converts the plant light and carbon dioxide into food to him.

The scientists analyzed the impact of the atmosphere and the sky a few lighting Alambldp on the plant, which resulted from contamination of the atmosphere in the world since the sixties.

The scientists concluded from their accounts during that so-called phenomenon of "the darkness of the earth", a phenomenon blamed for global plant productivity by up to 25% at times since the sixties and even in 1999.

Said Dr. Lina Mercado, from Britain's Centre for Environmental and Water Systems, and president of the research team, that this phenomenon caused an increase in the proportion of carbon, which then looked to the ground of 10%.

The study also noted a number of complexities of the human trying to address the problem of global warming.