The climate crisis is coming for your groceries

Extreme heat is pushing global agriculture to its limits, according to a joint report by the World Meteorological Organization (WMO) and the UN’s Food and Agriculture Organization (FAO). The study details how prolonged heat waves—like Brazil’s 2024 events—disrupted soy, corn, coffee, and livestock production, with central-western regions facing year-long heat stress for pigs and flooding in Rio Grande do Sul damaging shrimp supplies. Brazil’s case study underscores how El Niño and La Niña cycles amplify warming effects, threatening one of the world’s largest agricultural exporters. In Chile, warming ocean temperatures in 2016 triggered massive algae blooms, killing 100,000 metric tons of farmed salmon and trout—the largest aquaculture loss in history. The U.S. Pacific Northwest suffered in 2021 when a record heat wave wiped out raspberry and blackberry harvests, reduced Christmas tree farms by 70%, and increased wildfire-affected forest areas by 21–24%. India’s 2022 heat wave cut wheat yields by 9–34% in a third of states, slashed dairy production by 15%, and halved cabbage and cauliflower harvests. The report warns that human-caused warming has made the past 11 years the hottest on record, with extreme heat becoming a permanent threat to food systems. Kyrgyzstan’s Fergana mountain range saw spring temperatures 50°F above average in 2024, sparking a locust outbreak and cereal harvest declines. The 94-page document merges weather and agricultural data to outline strategies for adapting food production in a warming world, emphasizing the need for resilience in supply chains. Brazil’s agricultural sector—critical for global soy and coffee markets—faces outsized pressure from heat and erratic weather patterns. The report highlights how compounding climate stresses, from heat stress in livestock to flooding, disrupt supply chains and market stability. Solutions proposed include climate-smart farming techniques and infrastructure upgrades to mitigate future risks. The findings underscore a global trend: rising temperatures are no longer occasional disruptions but a persistent challenge to food security. From Brazil’s soy fields to India’s dairy farms, the report’s case studies reveal how vulnerable agricultural systems are to extreme weather, threatening food availability and prices worldwide.