What is driving Europe's heatwave? (opens in new tab)

Among the factors driving these extremes are atmospheric and circulation patterns that keep hot air trapped in place for days, causing the mercury to slowly rise. Scientists say these weather patterns are nothing new, but heatwaves are made more intense in a world hotter because of burning fossil fuels. 'Omega block' A circulation pattern over Europe is creating "the equivalent of a traffic jam in the atmosphere which locks in heat", Samantha Burgess from the European Centre for Medium-Range ...