After phones, cameras and taxis, Silicon Valley is looking to disrupt a rather more mundane American mainstay: fast food.
Start-ups are trying to revolutionise the food industry and have received hundreds of millions of dollars in funding from venture capitalists to do so.
Many are motivated by a desire to wean humanity off meat and other foods that have big environmental and social impacts, whether in the methane emissions and land use of cattle herds or additives in typical processed food.
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