I know some cafes (and markets etc) near where I live have started pushing [food miles](https://en.wikipedia.org/wiki/Food_miles) as a bit of a differentiator (in a similar vein to being 100% organic; eg showing the food miles of goods, or guaranteeing that the food mileage is less than X, etc) which would be the kind of movement that aligns with your concern, if of interest.