Thank you for your insightful reply Neroden. Are you sure that weight is the main determinant of shipping emissions though? It may be volume since ships are piled with containers as high as they can go. My knowledge of the hydrodynamics falls short although I might figure this out in a day or two.
What if he imposed tariffs on all imports, as he threatened, no longer scattershot. And China considered tariffs on American petroleum, this would be equivalent to a carbon tax, would it not?
Global trade must be reduced, and if not be tariffs then how?
Sorry also I know I'm talking about crashing the world economy, which would hit me too, but saving the world is more important isn't it?