Breakfast of polyvore champions: The first meal of the day is likely to contain dozens of species. There is nothing more fundamental about our relationship with Nature than the species we eat. One evening, while trying to discern exactly what was in the bean casserole my traveling wife had kindly left in the fridge, I wondered: What is the biodiversity of my diet? How many plant and animal species do I consume regularly? And where did they come from? Later, I compiled a species list from one typical day for four meals: breakfast (cereal and toast), lunch (yogurt and a …