Go into the supermarket and the fresh fruit and vegetables are stacked on the shelves.
As your eye is drawn to the root vegetables and lands on a kilogram of brown onions for $1, such a bargain that you instinctively grab a net of the firm flavour enhancers. What’s not to like.
Well, there is very little chance that the farmer can produce that kilo of onions for a few cents without mining the soil of nutrients and carbon.
Mine for long enough and the famine comes at you like a freight train.