Mercury Rising (IMAGE) University of New Hampshire Caption The fully thawed fens in the Arctic Circle in Abisko, Sweden, where UNH researchers found higher levels of methylmercury, a neurotoxin, that could be harmful to wildlife, fishing industry and people. Credit Credit: Florencia Fahnestock/UNH Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.