BY JOHN MURAWSKI jmurawski@newsobserver.com   March 28, 2018 05:10 PM Updated March 29, 2018 03:23 PM   RESEARCH TRIANGLE PARK — Cellphone radio-frequency waves can be decisively linked to cancer in rats, according to a national science panel meeting in Research Triangle Park on Wednesday. The scientists’ finding establishes the clearest connection of cellphone risk […]