The global food network has so far weathered the challenge of covid-19 and largely kept shelves and plates full. As the pandemic continues, more people are at risk of going hungry. But unlike past crises, the problem this time will not be supply. Rachana Shanbhogue and Matthieu Favas trace an $8trn food chain back from fork to farm to investigate the weak links. Can governments hold their nerve and resist protectionism? And could the crisis reveal an opportunity for a greener food future?

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