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People watch as a fire burns during a heatwave July 19 in London. London's fire service had its busiest day since World War II dealing with several blazes in record-breaking temperatures, London Mayor Sadiq Khan said. (CNS/Reuters/Tony O'Brien)
People watch as a fire burns during a heatwave July 19 in London. London's fire service had its busiest day since World War II dealing with several blazes in record-breaking temperatures, London Mayor Sadiq Khan said. (CNS/Reuters/Tony O'Brien)