How much food will be available for humankind in the future? Feeding nine billion people in 2050 without exhausting the planetary reserves is perhaps the greatest challenge humanity has ever faced. In this course of the XSeries in environmental studies, you will examine the principles of crop production. You will learn about the ‘availability pillar’ of global food security that lies at the heart of food production, applicable to both crops and animal production. This course will discuss why yields in some parts of the world are lagging behind and identify the agro-ecological drivers that shape the broad diversity of production systems. Also, key issues relating to the closing of yield gaps and the difference in visions of sustainability will be explored.