h i g h l i g h t sALCA of a mounted 1.8 kWp PV with and without PbA batteries is performed. Main impacts are related to the modules, inverter, and batteries respectively. Both PV systems are environmentally better than centralized electricity systems. Both PV systems are energy sustainable (EPBT = 16.1-16.9 years). Results indicate the implications of rolling PV systems at the regional level.

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The world faces severe and growing challenges in maintaining water quality and meeting the rapidly growing demand for water resources. As the present young people will be playing central roles in the future, the importance of understanding their views and paving ways for their participation is of utmost importance. The involvement of young people in the 'think globally, act locally' vision is illustrated here with the case of an international youth movement, the Young Water Action Team (YWAT 1 ).

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