Governments in West Africa are taking action to stop the import of fuel with dangerously high levels of sulfur and other toxins. Much of the so-called #8220;dirty diesel#8221; originates in Europe, according to a report published by Public Eye, a Swiss NGO, last year. The report exposed what Public Eye calls the #8220;illegitimate business#8221; of European oil companies and commodities traders selling low quality fuel to Africa. While European standards prohibit the use of diesel with a sulfur content higher than 10 parts per million (ppm), diesel with as much as 3,000 ppm is regularly exported to Africa. From July 1, diesel being sold at the pumps in Ghana and Nigeria will have to meet...