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Climate 
 have warned that many 
 of the world will experience more extreme heat. The 
 are from Copernicus, the European Union's Earth Observation Programme. Its meteorologists analysed world temperatures from 
, aircraft, weather stations and other 
 from around the world. The scientists reported that their 
 indicated a high 
 of an escalation in extreme temperatures. They said: "It was the 
 warmest June on record for Europe....Heatwave 
 persisted over western North America, where many temperature records were broken. Arctic Siberia also experienced 
 temperatures."