BAN Ki-Moon, the South Korean diplomat who headed the United Nations (UN) in the period of 2007-2016, underlined that clean water supply is key to battling the climate crisis. As the keynote speaker at the second Asia International Water Week at Labuan Bajo, East Nusa Tenggara, on March 14-16, Ban Ki-Moon cited UN studies which say that if global temperatures rise by 1 percent, 7 percent of the world population will suffer from a w