They’re calling it the “Walkie-Scorchie,” or “Fry-Scraper,” but to local businesses it’s anything but funny. The new 37 story building going up at 20 Fenchurch Street in London’s financial district is a sight to see, with unusual concave shaped windows and more space on the upper floors than on lower ones. The radical design is instantly recognizable in the London skyline, but tourists are drawn to it not so much to marvel at the architecture as to witness a now undeniable phenomenon: The building can produce a “death ray” of light so hot that it has started fires and melted cars unfortunate enough to be parked in its path. As it turns out, for two to three hours a day when the sun is brightest and hottest, the windows reflect and focus sunlight with such intensity that temperatures have been…

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