ABSTRACT
It is widely recognized that global warming poses a serious threat to agriculture in the already hot and arid regions of many developing countries. These areas are expected to become hotter and drier, exacerbating existing strains on food production, while world population is likely to increase from currently nearly 7 billion to about 9 billion by the middle of the century. However, it is less widely realized just how serious are the problems already facing agriculture in parts of China and India, as well as in Africa and many other regions with the fastest-growing populations – problems that threaten world food supplies even without any further warming.
