A United Nations Conference on Trade and Development (UNCTAD) report published on September 18th calls for radical changes in agriculture and food production. Farming in rich and poor nations alike should shift from monoculture towards greater varieties of crops, reduced use of fertilizers and other inputs, greater support for small-scale farmers, and more locally focused production and consumption of food, the report recommends. The UN Trade and Environment Report 2013 warns that continuing rural poverty, persistent hunger around the world, growing populations, and mounting environmental concerns must be treated as a collective crisis. It says that urgent and far-reaching action is needed before climate change begins to cause major disruptions to agriculture, especially in developing countries. Almost 1 billion people currently suffer from hunger, and another 1 billion are malnourished, the report notes, even though current global agricultural production already provides sufficient calories to feed a population of 12 to 14 billion. Highest priority must be given to enabling the rural poor to become self-sufficient in food or to earn sufficient income through agriculture so that they can buy food.