Tensions surge over Serbia's small hydropower plants
Deep in the isolated forests of eastern Serbia a digger gouges a channel through the trees for a pipeline to siphon river water, as the coal-reliant country's efforts to clean up its energy habit triggers a hydro "gold rush". The remote and sparsely-populated Bulgarian border region of Stara Planina, which means Old Mountain in Serbian, is famed for rugged peaks and pristine rivers cascading