Khalid Ali-M Aldawsari was buying chemical explosives, say authorities
                                
                                
                                    (Newser) -
                                    A Saudi Arabian man attending college in Texas has been charged with the "attempted use of a weapon of mass destruction," the Justice Department announced today. Khalid Ali-M Aldawsari, 20, allegedly bought several chemicals needed to build an improvised explosive device, and “was actively researching potential targets,...