Text 3: Extreme heat intensifies across south-west US
A heat dome over the US south-west has translated (1) into extreme heat warnings from coast to coast,
which continue to affect more than 110 million people.
Temperature records could be broken in as many as 38 cities.
In Las Vegas, the intense heatwave is threatening on Sunday to break or tie the city's record high of 117F
(47.2C).
It comes as soaring temperatures are also hitting southern Europe and Canada is battling the worst season of
wildfires in its history.
Scientists have long warned (2) that climate change linked to human activities will lead to an increase in the
severity and frequency of extreme weather events.
Elsewhere in the south-western US, hundreds of firefighters have been battling brush fires in blistering heat
and low humidity on the outskirts of Los Angeles.
Extract from: https://www.bbc.com/news/world-us-canada-66218321