From Ecuador to Nigeria to the Gulf of Mexico http://intercontinentalcry.org/from-ecuador-to-nigeria-to-the-gulf-of-mexico/

In the United States alone, roughly 20,000 oil spills were recorded between 2000-2008, totalling some 4 million gallons.If we widen the scope a bit, we also find Texaco's oil adventures in the Ecuadorian Amazon. Over the course of 30 years, until 1990, the company permitted more than 19 billion gallons of toxic oil wastewater and 17 million gallons of crude oil to leach into the environment. It's by far the largest oil disaster in the world.