Associated Press: A moderate, magnitude-4.4 earthquake has shaken northern Oklahoma. It was one of the stronger temblors the earthquake-prone state has had this year. There were no initial reports of damage or injuries from Saturday mornings earthquake, which was 18 miles southwest of Medford and four miles deep. US Geological Survey seismologist George Choy said it had all the hallmarks of an induced quake, meaning it was triggered by the injection of drilling wastewater underground. Choy said this seems to...