Nutritional quality of food
New Scientist article 2015: Is food really better from the farm gate than supermarket shelf?
PLOS one: Organic Production Enhances Milk Nutritional Quality by Shifting Fatty Acid Composition: A United States–Wide, 18-Month Study
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0082429
Documentary in French ‘Eat more to be less nourished’: Manger plus pour se nourrier moins