Early warning systems are effective at detecting and potentially reducing food security and nutrition risks . Examples of proven systems include the United States Agency for International Development  Famine Early Warning System, the Food and Agricultural Organization's Global Information and Early Warning System and the World Food Programme's Corporate Alert System. Such systems are fundamental for anticipating when a crisis might occur and setting priorities for interventions . Financial investments to develop early warning systems are cost-effective and reduce human suffering  . For instance, during the 2017 drought-induced food crisis in Kenya, 500,000 fewer people required humanitarian assistance than would have been expected based on past experiences; this was largely due to timely and effective interventions triggered by the early warning .
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Climate Change 2022: Impacts, Adaptation and Vulnerability
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