Climate change can have severe knock-on effects for food security.The COVID-19 pandemic has worsened food insecurity, according to the World Food Programme.Agroecology, with its chemicals-free and traditionally-led principles, could make the world's food systems more resilient, according to a UN report.But critics say there are issues in food production that the agroecological approach may not be able to address. Conflict, the climate crisis and ...