/tags/manganese Manganese en-US Copyright Sat, 17 Sep 2016 13:27:00 GMT /environment/2016-09-17/researchers-say-thousands-of-wells-likely-contaminated-with-manganese North Carolina State University researchers estimate that thousands of North Carolina residents and more than 1 million residents in the southeast have… Sat, 17 Sep 2016 13:27:00 GMT /environment/2016-09-17/researchers-say-thousands-of-wells-likely-contaminated-with-manganese Jess Clark