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Manitoba to curb hog farms to save Lake Winnipeg
Manitoba will tighten rules on expanding hog farms and ban manure spreading to cut the flow of phosphorus into the world’s 11th-biggest freshwater lake, as Lake Winnipeg deteriorates from algae growth. The western Canadian province, which has the country’s third-largest pig herd, will also protect wetlands that filter out pollutants and force the capital Winnipeg…