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Available for over a year

What are we eating? Where does it come from? Why does that make sense? In a new series, Charlotte Smith explores the global networks that supply us with food and asks why they have become so complex. Charlotte visits a Kent grape importer and finds out how many countries and how many varieties it takes to meet our demand for year-round grapes. She visits Wageningen University in the Netherlands to look at the technology that makes global food value chains possible. And with commentators and leading figures in research, she discusses the risks that complicated networks can create, and how food can be produced in a sustainable way for an ever growing global population. Producer: Chris Ledgard.