Swiss glaciers are shedding fast-protecting snow as Europe fries in a heatwave. That threatens bigger ice loss later. Sources tell the story. In the US, experts say the current hot spell is impossible without climate change. Homes in the region still struggle against extreme heat. Take Berlin - older flats there stay hot without air conditioning. Locals step up on food shocks. Governments lag behind in response. These signs show heat danger growing and preparedness lagging everywhere.