Nigeria began the cleaning up of oil spills as old as 50 years in the Ogoni district of the southern Niger River delta on Thursday, in line with recommendations by the United Nations. A study by the UN Environment Programme at the instance of the Nigerian government, which was published in 2011, found widespread pollution in the Ogoni area that would require the world’s largest clean up that could cost at least $1 billion. While no action was taken on the report for years, President Muhammadu Buhari […]