The United Nations envisions that, by 2050, almost 70 percent of the global growing population will be living in urban areas, especially in small cities and towns within Africa and Asia. This will mean more people to feed in these cities, as well as the risk of nutrition problems and increased levels of obesity associated with changes in diet and lifestyle. In this context, agriculture will need to produce more nutritious food while competing for ever scarcer natural resources and struggling with the effects of climate change.