Guardian: This month the world’s environment ministers meeting in Nairobi, Kenya can take a landmark decision to lift a global health threat from the lives of hundreds of millions of people. A strategy to begin seriously dealing with mercury and the highly toxic compounds of the heavy metal will come before the UN Environment Programme’s governing council when it meets from 16 February. The policy framework – the result of seven years of discussions spearheaded by Unep – represents the first, …