Extreme weather envelops Europe
b'The UK declares a national emergency as it suffers through its hottest day on record, with extreme weather warnings throughout much of Europe as well as in the US. Heat advisories are also in effect across global financial markets as investors navigate a perilous summer landscape.\\nTo learn more about how CNN protects listener privacy, visit cnn.com/privacy\\nLearn more about your ad choices. Visit megaphone.fm/adchoices'