A green cruise ship is like a green aircraft or a green car: it does not really exist. Just building it is already costly, and so is operating it. Filters and t

A green cruise ship is like a green aircraft or a green car: it does not really exist. Just building it is already costly, and so is operating it. Filters and tanks are just shifting the problem, as well. But that’s beside the point anyway, as it was just raised as an ad hominem argument against the guy who wanted websites to work on poor connections, and rightly so.