SYDNEY (Reuters) - An Australian man built up a 40,000-volt charge of static electricity in his clothes as he walked, leaving a trail of scorched carpet and molten plastic and forcing firefighters to evacuate a building. Frank Clewer, who was wearing a woollen shirt and a synthetic nylon jacket, was oblivious to the growing electrical current that was building up as his clothes rubbed together. When he walked into a building in the country town of Warrnambool in the southern state of Victoria on Thursday, the electrical charge ignited the carpet. "It sounded almost like a firecracker", Clewer told Australian...