The Iguazú Falls span more than a mile across both countries. A rain-soaked October, which scientists link to the Super El Niño, has sent near-record volumes of water surging over the towering cliffs.
Source: [NPR News](https://www.npr.org/2026/10/22/g-s1-148553/argentina-brazil-iguazu-falls-waterfalls-super-el-nino)