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Whereas the Internet is unarguably an important technological invention of man, one will not be at all times secure in it. In truth, anybody can have his web safety compromised by hackers and system contaminants such as viruses, worms and Trojans. Energy obtained from photo voltaic energy is clean. Clean vitality from the sun can change power sources that pollute the setting. The few emissions of greenhouse gases or air pollutants generated by solar power technologies happen largely in the course of the manufacturing course of. A 100-megawatt photo voltaic thermal electric power plant, over its 20-yr life, will avoid more than 3 million tons of carbon dioxide (CO2) emissions when compared with the cleanest conventional fossil gasoline-powered electrical crops obtainable right this moment.