As the world recovers ever so gradually from the 2008-10 recession and its aftermath, the percentage of the world's population considered to be middle class is growing. However, there are numerous critics of the increased consumption of meat and dairy products that has been tied to increasing per capita purchasing power.One truism in this business of agriculture that has persisted simply because it is fact is this: As peoples' income grows, they tend to consume more animal protein in the form of meat, eggs and dairy products. Accordingly, direct consumption of vegetable proteins such as grain and legumes tends to decline.As the world recovers ever so gradually from the 2008-10 recession and its aftermath, the percentage of the world's popul...