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How do we produce more food? How do we consume less food? With an ever-growing world population (estimated to reach 10 billion people by 2050), these are the questions we will be facing, as overconsumption, obesity and food waste become problematic in Western nations while whole populations in less-developed countries struggle with famine. David McWilliams, an economist from Ireland, offered ideas toward solving these problems at a “City Talks” event at the City Recital Hall in early November.