The fall armyworm is hungry, on the move and scaring farmers the world over. The crop-devouring pest has spread from the Americas to Africa and Asia, gorging on rice, corn, vegetables, cotton and more. Europe, Australia and Southeast Asia could be next. In its first three years in Africa alone, it inflicted $13.3 billion of crop losses. A recent arrival in China, the fast-moving grub may infest the country’s entire grain-producing farmland within a year. With food supply chains already facing disruption from the trade war and a global epidemic killing pigs, the world is bracing for the adva...
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