El Niño is no longer looming—it's arrived, and it's turning up the heat. UN Secretary-General António Guterres declared the strengthening pattern “adding fuel to a planet already on fire,” warning it will push the climate into “uncharted territory” through October. The World Meteorological Organization forecasts marine heatwaves will exceed 2.9°C above normal, threatening monsoon rains in India and bringing drier conditions to parts of Africa, Australia, and the...