This document discusses agricultural biodiversity and food security. It defines food security as reliable access to affordable, nutritious food for all individuals. Originally food security applied to nations, but now emphasizes individuals over nations. Household food security means all members have enough food for a healthy life. The document also discusses the loss of agricultural biodiversity as indigenous crops and livestock are replaced by few high-yield varieties, threatening food security. It argues for supporting farmers' conservation of biodiversity and redesigning policies to ensure continued access to genetic resources.