domingo, 29 de abril de 2007

Climatic change: Energy, food and climatic change.

Gear y Maizar.

Salta, Argentina.

The humanity today faces three challenges of very complex overcoming. In the first place, to include to the thousands of million human beings who lack access to foods and energy for their adapted development. In second, to produce necessary foods and the energy. And, finally, to do avoiding it the apocalyptic damage to the atmosphere that is foretold from burns it of fossil fuels - according to the report of the United Nations spread it makes few days and the well-known film of A Gore. We know that the energy is essential for the economic and social development. The demand of energy comes considerably increasing as the countries developing expand their economies and surpass the poverty. In these days, less of a 20% of the world-wide population it has access to the required energy to reach the high standards of life that enjoy the countries developed. The access to modern power plants is decisive to solve the poverty and the problems of education, health and use of the communities. So that the citizens of the countries developing we obtain standards of life similar to the developed ones we must work to improve the efficiency in the use, the diversity and the technological development of the necessary power plants for the home, the industry, the transport and the generation of electricity. More than 100 billion dollars they spend the governments annually to subsidize agriculturists in the developed countries. Years ago this amount reached 300 billion dollars. These policies of massive subsidies, that take more than 50 years of use in the world, have had a destructive effect on the capacity of the other countries to develop their agro-industrial and to become economic and socially self-sufficient chains. In principle they have generated enormous excessive of foods and raw materials like maize, that is overturned to the world-wide market or transformed into other products like bovine meat, dust milk, butter or chicken, to arrive at the countries developing in different forms. The impact of the entrance of these products in almost all the countries developing and their unequal competition, has meant the fall of seeded areas and, in many cases, the diminution of the productive and transforming capacities of those product raw materials of greater value. A reality that carries the unemployment of million people in many sectors of the society, not only in the farming one. The necessity to look for alternatives the fossil fuels is allowing that these enormous agricultural excesses are canalized and that the countries that could not increase their productions of agricultural raw materials like the maize, the sugar sorghum or cane today are investing in the construction of a new nutritional base and renewable energy. This extraordinary phenomenon of agro-industrial development is seen in all the countries developing of the world. In each one of these cases, the industrial technologies, investments, of engineering, culture, and all the aspects necessary are being developed to be able to create value chains where before only there was unemployment and hopelessness. The ethanol production is a biological process that generates a fuel liquid that is used for the motors of internal combustion. Also it allows to obtain a food of high quality for the production of meat or milk in a high percentage of the processed maize, and causes electricity from burns it of the bagasse, strubble or biogás. In the present vision of the spare part of the power plants one sees clearly that a magical energy does not exist that is going to replace to fossil fuels. On the contrary, we observed that the use of these is due to rationalize of all the viable ways while all the possible alternative power plants are developed. Consensus exists about which the natural source of energy of the Earth is the sun and that the most efficient form of capture of the energy of the sun the plants by means of the photosynthesis make. The sun also transmits its energy to us

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