The food industry is struggling to find the next technological advancement to feed a growing population. For hundreds of years scientists have sought inventive ways to produce and package calories while advertisers have been learning how to change our tastes and perceptions. The FT's consumer industries editor Scheherazade Daneshkhu talks to food historian Polly Russell about the journey from liquid meat to meal worms.FT special report: The Future of the Food industry www.ft.com/reports/future-food-industry

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