Dangerous US heat wave pushes eastward, capping globe's record July

[Collection]An intensifying heat wave descended on the eastern United States on Thursday, prompting warnings about the dangers presented by the sweltering heat and humidity in the final days of a record-smashing July around the world. Some 180 million Americans - about half the population of the United States - are under heat watches and warnings, with temperatures and heat index values well above 100 degrees Fahrenheit (37.8 Celsius) in the forecast until at least Saturday, the National Weather Service said.