Ecologist: Just one degree of global warming could cut wheat yields by 42 million tonnes worldwide, around 6% of the crop, writes Paul Brown - causing devastating shortages of this staple food.
Market shortages would cause price rises. Many developing countries, and the hungry poor within them, would not be able to afford wheat or bread.
Climate change threatens dramatic price fluctuations in the price of wheat and potential civil unrest because yields of one of the world's most important staple foods...