Blue and Green: Climate change and the continued use of polluting fossil fuels will exacerbate water stress and scarcity in many places, according to the UN secretary-general Ban Ki-moon. Speaking in a video message to a Tokyo event ahead of World Water Day, Ban added that water and electricity must be used fairly. Michel Jarraud, chair of UN Water, echoed the secretary-generals sentiments as the UN launched its World Water Development Report. He said, The report shows that there will be a significant increase...