Record heatwaves sweep the world, from US to Europe and Asia

Tens of millions of people around the world were facing dangerously high temperatures on Sunday, as record heat forecasts loomed over portions of the United States, Europe, and Asia, in the latest demonstration of global warming's menace. According to the US National Weather Service, a severe heatwave ranging from California to Texas was predicted to climax, with an "extremely hot and dangerous weekend" forecast. In the west, daytime highs were expected to be 10 to 20 degrees Fahrenheit above average. Phoenix, Arizona's state capital, has seen 16 consecutive days with temperatures above 109F (43 degrees Celsius), with locals bracing for…