(April 11, 2014) Experts say an aging mega-dam on the Zambezi River between Zambia and Zimbabwe is in imminent danger of collapse and poses a threat to 3.5 million people. Zimbabwe’s disaster preparedness was revealed as “extremely weak” earlier this year after torrential rains caused the partial collapse of the country’s Tokwe-Mukosi dam, which displaced thousands and forced the government to declare it a national disaster.