Rail is more environmentally friendly than air, but it lacks capacity and it's not very fast. Ocean is much worse for the environment than air, because emission

Rail is more environmentally friendly than air, but it lacks capacity and it's not very fast. Ocean is much worse for the environment than air, because emissions from shipping aren't regulated and they burn the worst of the worst while happily dumping waste overboard once in international waters. At least air has global rules on clean operation set by IATA since a few years.