Dangerous heatwaves engulf parts of China, US and Europe

At least 86 Chinese cities issue alerts, while temperatures soar in south-west and central US and Iberian peninsula

Dangerous heatwaves are engulfing parts of China, Europe, south-west and central US this week, as dozens of cities have found themselves dealing with soaring summer temperatures.

By Tuesday afternoon, at least 86 Chinese cities in eastern and southern parts of the country had issued heat alerts. Chinese meteorologists forecast temperatures in some cities would top 40C (104F) in the next 24 hours.