Agence France-Presse: The United Nations Environment Programme (UNEP) on Sunday urged environment ministers meeting this week in Nairobi to adopt a strategy to curb the use of the highly toxic metal mercury. “The world’s environment ministers meeting in Nairobi, Kenya this week can take a landmark decision to lift a global health threat from the lives of hundreds of millions of people,” UNEP Executive Director Achim Steiner said in a statement. More than 100 environment ministers from around the …