FAO and WMO report extreme heat threatening global food systems. Extreme heat intensifies droughts, wildfires, and reduces crop yields above 30°C. Brazil's soybean yields dropped 20% in 2023-2024 due to heat. Kyrgyzstan's cereal harvests fell 25% in 2025 from heat events. 91% of oceans experienced marine heatwaves in 2024, depleting oxygen and threatening fish stocks