TORONTO - There are still no leads in the case of an eastern Ontario scientist who disappeared without a trace last month, leaving his colleagues mystified. Lachlan Cranswick hasn't been seen since Jan. 18, when he left work at the National Research Council's Canadian Neutron Beam Centre in Chalk River, northwest of Ottawa. His nearby Deep River house was reportedly left unlocked and his car was in the garage. His wallet, keys and passport have all been accounted for......