GM's turn in the barrel

RADROG wrote:

I find it interesting that the world's 15 biggest container ships create more air pollution than all of the cars in the world.

This is quoted often, but it's only half of the story. When you measure the amount of pollutants coming out of the smoke stack of ships, sure it's pretty high. However, when you look at the amount of tonnage these things are moving, the emissions are pretty low compared to other methods. The emissions would be pretty insane if those tons were transported by other methods. The most efficient land based transportation would be trains and they still produce twice as many emissions as ships.