What is the 'Lucifer' heatwave that hit Europe this year?
The heatwave which saw temperatures surging beyond 40ÂºC in southern parts of Europe was dubbed with the satanic name "Lucifer" this year. The deadly heatwave was also linked to Portugal's worst forest fires, which took 64 lives. Scientists claim human-caused climate change made the phenomenon at least 10 times more likely than it would have been in the early 1900s.