View image in fullscreen A man sprays water from a tanker to extinguish burning olive trees in İzmir, Turkey. But he knows from previous summers that weeks of extreme temperature changes throughout the day can make him sick. View image in fullscreen Sous-chef Luigi Randazzo at work at a restaurant in Sutera, Sicily. View image in fullscreen Construction workers repair railways for tramways as the Netherlands faces temperatures reaching 37C. Otherwise, it’s a case of not moving too fast.” View image in fullscreen Sven, 58, rewires a telecommunications box on a street in Berlin.