When the Brazilian nutritional scientist Carlos Monteiro coined the term “ultra-processed foods” 15 years ago, he established what he calls a “new paradigm” for assessing the impact of diet on health.
Travel and history can both inspire a sense of moral relativism, as they did for the Greek historian and traveller Herodotus in the 5th century BCE. What should one make of the fact that what counts as adultery, for example, differs around the world?
