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Assemble solar cookers
Solar cookers are the result of a study by a group of engineers from Petech and the HCM City Energy Efficiency Center. According to engineer Phan Tri Dung, the head of t…
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Blue sky and clean water
Liu Wen-shan, director of Wuhan City's Environmental Control Center, is proud of his modern system. In the concrete bunkers located on the roof of a building, a comp…
New technology
Pour water into the sea to save Venice
Italian experts are proposing a bold project to save the threatened Venice city. Instead of draining away, they want to pump water to lift the floating city that is subm…