Death Ray Hotel

http://www.dailytech.com/Hotel+Accidentally+Makes+Solar+Death+Ray+Burns+Lawyer/article19756.htm

QuoteThe "death ray" appears to be created by the glass surface of the hotel itself -- acting as a concentrating parabolic dish -- similar to those used to heat water to a boil in solar power systems. The dish concentrates light on a 10-foot by 15-foot hot zone moving across the pool. Temperatures in this area spike 20 degrees Fahrenheit -- or more.