Why the WHO must declare climate change a public health emergency https://phys.org/news/2026-10-declare-climate-health-emergency.html > Across the world, people have felt the impacts of climate change firsthand. The Northern Hemisphere has had another record-breaking summer season of heat and extreme weather events. The Southern Hemisphere now faces a summer of heat waves, flooding, wildfires and droughts. This is driven by decades of climate change, now supercharged by an unprecedented El Niño #climateEmergency