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The document describes El Niño as a natural climate phenomenon characterized by warmer-than-average sea surface temperatures in the equatorial Pacific. It argues that climate change is increasing the frequency and severity of extreme El Niño events, particularly Central-Pacific (CP) events, and complicating their prediction. For 2026, there is a 61% chance of an El Niño emerging between May and July, with some models suggesting it could be the strongest in 140 years. The briefing details global teleconnections, noting that El Niño typically causes droughts in southern Africa, Australia, and India, while increasing flood risks in East Africa and the Americas. These shifts significantly impact global agriculture, reducing yields for maize, rice, and wheat while often increasing soybean yields. Regional analysis highlights specific risks, such as increased cholera in East Africa, hydropower reductions at Kariba Dam in Zambia and Zimbabwe, and the Amazon becoming a net carbon source during Eastern-Pacific (EP) events.