World’s major cities hit by 25% leap in extremely hot days since the 1990s
Capitals from London to Tokyo need urgent action to protect people from deadly high temperatures, analysts say
Safety and space at risk as SUVs reach 30% of car market in English cities, researchers warn
Noaa data from the 50 most populous cities in the US shows the heatwave season is 49 days longer now compared with the 1960s