The document discusses the impacts of climate change on agriculture and food security. Climate change is profoundly modifying agricultural conditions and production impacts translate to economic and social consequences that affect food security. The net effects on food security depend on vulnerabilities of affected systems. Responses include increasing resilience of livelihoods and agricultural systems, managing genetic resources, and investing in adaptation options, policies, and institutions. Urgent action is needed by stakeholders to establish institutions and policies to prepare for and enable short, medium, and long term responses to climate change impacts on agriculture and food security.