1. While global food production is enough to feed the world's population, hunger persists with nearly 870 million people experiencing hunger between 2010-2012.
2. Food security is defined by the UN and related institutions as people having access to enough food to meet their needs, but this definition is criticized for ignoring power dynamics in food systems and focusing on trade.
3. Multiple factors are putting pressure on global food systems, including population growth, urbanization, rising consumption, and climate change, making food security a major challenge of the 21st century.