Henry Hobhouse’s book Seeds of Change: Five Plants That Transformed Mankind (now six, with the addition of cacao) contains the remarkable fact that at the height of the slave trade a single teaspoon of sugar cost six minutes of a man’s life to produce. Reason enough to cheer the abolition of slavery, I suppose. But that doesn’t mean that everything is sweetness and light in the business of sugar. Or salt. A photo gallery in The Big Picture made that very clear, and inspired Rachel Laudan, a food historian, to write in praise of industrial salt and sugar.
We often don’t know how lucky we are to live in the modern highly linked world. The concept of industrialized foods like salt and sugar and their prior histories will certainly bring our situation into high relief. The history here and its broad effects could certainly be fit into the broader category of big history as well.