How we live is shaped by how we eat. You can see this in the vastly different approaches to growing, preparing and eating food around the world - from the hunter gatherer Hadza in Tanzania whose traditionally sustainable lifestyle is being squeezed by a crowded planet, and the subsistence rice farmers of Bhutan who toil without machinery to feed themselves from their smallholdings, to Western societies whose food is mostly farmed or bred in vast intensive enterprises. But while traditional app