Alarm as fastest growing US cities risk becoming unlivable from climate crisis

Temperature hit 102F in San Antonio, Texas, on Monday, as more than 100 million people are currently under heat related warnings across the US. Photograph: Xinhua/REX/Shutterstock

The ferocious heatwave that is gripping much of the US south and west has highlighted an uncomfortable, ominous trend – people are continuing to flock to the cities that risk becoming unlivable due to the climate crisis.

Some of the fastest-growing cities in the US are among those being roasted by record temperatures that are baking more than 100 million Americans under some sort of extreme heat warning. More than a dozen wildfires are engulfing areas from Texas to California and Alaska, with electricity blackouts feared for places where the grid is coming under severe strain.