I was pleased to see Rana Foroohar write (“The Problem with Big Food”, (Opinion, June 22) about the issues with industrial farming laid bare by Covid-19. She suggests that the latest work of high-tech agricultural start-ups may provide a solution.

As Co-Chair of the UN Global Accelerator, I have long argued for the need to reform food supply chains and praised the benefits that small businesses have brought to the table. Technology has frequently been crucial in supporting agriculture during the crisis, such as in Switzerland, where farmers are using a digital service to provide “virtual field inspections” so they can comply with social distancing rules. However, technology can only go so far, to achieve long-term sustainable agriculture practices, initiatives must also come from governments, particularly in developing countries.

UN research shows that while farming systems have modernised, the amount of land…

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