Oil companies have polluted Nigeria

...The bigger, more disturbing picture is that oil spills have contaminated the once fertile Delta with approximately 1.5m tonnes of crude oil, equivalent to one Exxon Valdez disaster every year for the last 50 years. As Amnesty International pointed out in a report this July, Shell "has failed to respect the human rights of the people of the Niger Delta … through failure to prevent and mitigate pollution"....CommonDreams