Antonio 5A - I.P.I.A"G.Marconi"

Renewable sources of energy are able to ensure a more limited environmental impact compared to that produced by fossil fuels. The main advantages of renewable sources consist in the fact that they are inexhaustible, who renew their availability in a short time, and that their use produces an environmental pollution entirely negligible.
Wind energy is the energy possessed by the wind, that only a few decades is used to produce electricity. To harness the energy of the wind turbines are used. The principle is the same as the old windmills ie the wind that pushes the blades, in this case, the movement of rotation of the blades is transmitted to a generator that produces electricity.
The wind turbines are different in shape and size, the type most widely used is the average, about 50 meters high with 2 or 3 blades 20 meters long and capable of providing a power supply daily to 500/600 kW (equivalent to the daily electricity demand 500 families).
More wind turbines together form the wind farm, "wind farms", real power in which the turbines are located at a distance apart equal to 5/10 times the diameter of the blades, so in case of wind turbines it is an average installed every 200 meters

Antonio 5A - I.P.I.A"G.Marconi"

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Barbara, Francesca e Jessica - IPIA "G.Marconi"

Year 2000. 189 Heads of State and Government sign at the bottom of the Millennium Development Goals. After the Universal Declaration of Human Rights of 1948, it is the most important global agreement based on mutual commitment: doing what is necessary to build a more prosperous, fair and safe world.
Ensuring environmental sustainability is the seventh of the eight goals proposed.
This goal is composed by the following points:

• Integrating the principles of sustainable development into country policies and programs and reverse the loss of environmental resources; 
• Reducing biodiversity loss, achieving, by 2010, a significant reduction in its rate; 
• Halving, within 2015, the percentage of people without access to safe water and basic sanitation; 
• Achieving, by 2020, a significant improvement in the lives of at least 100 million people living in shanty towns.
Every day a forest twice time bigger than Paris disappears.
One billion and 600 million people lack in having basic hygienic services. 
The development of renewable energy grew tenfold in the last decades and China wants to beat the U.S. in number of solar panels installed.
Most countries have undertaken to introduce the principles of sustainable development into country policies and national strategies. They also established the implementation of important international agreements.
Millennium Development Goal 7 foresees a reversal in the loss of environmental resources, including forests, biological diversity and the layer of ozone on the Earth, guaranteed access to water supply, adequate sewage systems and decent and sustainable housing plan for poor people in the world. Although the progress on certain of these areas is encouraging, the overall picture is bleak.
The AIESEC project aims to a dialogue within countries by raising awareness in schools and other environments, deepening the concept of sustainable development, including environmental issues that is an essential feature and support the educational work among the younger generations so that they may contribute to a future social equity, to ensure everyone on the earth to enjoy natural resources now and in the future and contributing to the development of relations between different realities, the promotion of cultural exchanges and the promotion of Intercultural communication tools.

Barbara, Francesca e Jessica - IPIA "G.Marconi"

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