Smart Net-Zero

June 18, 2025 | CNN Climate |

A major study published in *Nature* warns that climate change could slash U.S. production of key crops—maize, soybeans, and wheat—by up to 50% by 2100. Drawing from eight years of data across 12,000 regions, the study shows every 1°C of global warming may cut global food output by 120 calories per person daily. Despite some on-farm adaptations, such as switching crop varieties and irrigation adjustments, these efforts are insufficient. Wealthy nations like the U.S. may be hit hardest due to rigid agricultural systems, especially in the Midwest Corn Belt. The study also finds that rising temperatures will increase food prices, reduce access to nutrition, and even affect traditionally resilient crops like cassava in Africa. Researchers urge urgent transformation of energy systems and agricultural practices to avoid deepening the global food crisis.