Al Jazeera: A dam-building boom across the developing world will bring electricity to growing, power-hungry cities across Asia, Africa and Latin America. But it can also put the worlds climate and people at risk, according to a new study by researchers aiming to reduce the host of environmental problems that can come with dam construction. Researchers at Tübingen University in Germany have have compiled a database of the 3,700 different dam projects planned or underway worldwide. They predict that global hydropower...