16 ships do NOT create as much pollution as all of the cars on the planet, period. They create as much of a specific type of pollution as all of the cars on the planet.
"Traumatic brain injuries are not the only kind of injuries. If it weren't for the fact that they result in death, they wouldn't really even be important."
If you feel I was minimizing the importance of sulfur pollution in comparison to carbon pollution, that is because I was. Carbon pollution is, in fact, more important.
Behold, data: http://i.imgur.com/t75zXYw.png
What if I told you that Côte d'Ivoire produced more food than any other country in the world? What if you then discovered that by "food" I meant cocoa beans, and they're not even remotely close to being at the top when considering all food?
15 ships do not equal the carbon pollution of all the cars in the world.
1: http://en.wikipedia.org/wiki/Fuel_oil#Bunker_fuel