Hot, hot, hot with melting cables

Over heating on the tube/subway stations and water shortages and restrictions, are familiar in London.
Temperatures in NY today were  40degrees! (103F) - it gets hotter when you add the humidty into the mix.
It's so hot that electric cables are melting and the electric company have issued guidance on using less electricity, short showers and run the dishwasher only at night.

But more importantly they've advised people not to go outside into these temperatures unless you really need to - a 'Heat advisory' -I've only ever heard this about cold weather! Who knew..