A man from North Dakota (USA) surprised netizens by showing how your tap water catches fire just approach it with a lighter. “The first time I did it, there was a big fireball that occupied all over the sink, so I’m very cautious. Do not want to burn the bathroom,” the man said with a laugh during the experiment. In three weeks the video has been viewed hundreds of thousands of times. “Nothing more refreshing than a glass of fire,” said one of the Netizens who saw the video. The video has prompted speculation about the origin of the phenomenon, which might be due to the extraction of oil and gas in the state of North Dakota, the second largest oil producer in the U.S. A technique to enable or enhance the extraction of the subsoil, which consists of injecting pressurized water with other elements in the soil to destroy the rock and open access to gas or oil: extraction fracking or hydraulic fracturing is used. The method is very effective, but causes protests by environmentalists for causing ecological damage. However, some express different opinions, noting that the phenomenon may be due to the natural presence of methane in the water extracted in that state. “It was so long before they began to use fracking in the state,” says a comment below the video.