Mysterious lightning flashes that appear to precede earthquakes could be sparked by movements in the ground below, US scientists say. ... "Our first suspicion

Mysterious lightning flashes that appear to precede earthquakes could be sparked by movements in the ground below, US scientists say. ... "Our first suspicion was this has got to be a mistake. There must be something stupid we are doing," said Professor Troy Shinbrot, of Rutgers University, New Jersey. "We took a tupperware container filled with flour, tipped it back and forth until cracks appeared, and it produced 200 volts of charge. http://www.bbc.co.uk/news/science-environment-26462348 http://www.bbc.co.uk/news/science-environment-26462348