UN Secretary-General Antonio Guterres warned Friday that a strengthening El Nino could shatter all-time temperature records and is “adding fuel to a planet already on fire,” pushing the world into “uncharted territory.” Guterres called for an immediate halt to new fossil fuel development, saying the climate phenomenon is intensifying heatwaves, floods, and drought around the globe. His warning came as scientists expect the El Nino, a natural climate pattern that warms parts of the Pacific Ocean, to amplify the effects of human-caused climate change. The UN chief urged world leaders to accelerate the transition away from coal, oil, and gas, which are the main drivers of global warming. He described the combination of a strong El Nino and existing climate pressures as a dangerous escalation, threatening food security, water supplies, and public health in many regions. Guterres did not specify a timeline, but stressed that the next several months could bring extreme weather events that test the limits of current systems. He called for better preparation and stronger international cooperation to protect vulnerable communities. The warning follows months of record global temperatures and extreme weather, which scientists say are being worsened by the developing El Nino.