the current food shortages have emerged quickly and with little warning. as always, several reasons are cited. the rising middle class in asia and in other emerging markets with bigger purchasing power is one such reason, while another argument is the attractiveness and usage of food raw materials for other pur¬poses such as cattle feed, fuels and materials. some even say that the production of bioplastics plastics made from renewable raw materials is prejudicial to food production. crop failures, climate change, protective tariffs, and poor logistics are other factors that are said to affect global food supplies.
