I'm actually listing the "date read" for "date I gave up on," or at least "date I gave up on reading it all in order." I ended up jumping around a lot, because the through-line narrative was not enough to hold my attention. Deeply interesting book, just very dense. Kind of like Wasa bread - I always start out really enjoying it, hey-why-don't-I-eat-this-more-often sort of thing, but then the tasty bits start to form an unpleasant paste that sticks to the roof of your mouth, and then you're looking for anything to wash it away.
Barbara Kingsolver's Animal, Vegetable, Miracle dealt with the same general subject matter in a far more digestible fashion. Melba toast, maybe?