Feeding the World in a Time of Climate Change
Abstract Maintaining a plentiful and high-quality food supply is essential to enable humans to survive and flourish in the coming decades. In 2019/20, an estimated 2.71 Gt of food grains have been produced worldwide. This fundamental food source is alone enough to supply sufficient nutritional kilocalories for the entire current global population. And nutrition is supplemented by the many other crops, livestock and sea food that are part of the overall food system. Yet, in the same year, it is estimated that around 821 million people, more than one tenth of the 7.6 billion people in the world were chronically hungry. There are many reasons for this. Waste—the FAO estimates that around one third of food produced is wasted—is certainly one, but also important are the inequities in the food production and supply system. While much can and should be done to correct these two critical problems, sustainable agriculture remains as the core feature of a healthy food supply.