LUSAKA, Nov.... 28( Xinhua)--The World Wide Fund for Nature( WWF) has partnered with Zambian Breweries, Zambia's main brewer, to enhance the productivity and resilience of the ecosystem of the country's longest river, according to a statement released on Tuesday. The partnership between the WWF and the brewing company will result in the undertaking of a comprehensive initiative aimed at safeguarding the Kafue River Basin in the southern part of the country through research, farmer-managed natur