[I guess you should fly more.  Your cruise ships are destroying the environment more than airplanes, apparently.](https://www.telegraph.co.uk/travel/739287/Flying-three-times-greener-than-cruising.html)



[Worse than I thought](https://grist.org/living/you-thought-planes-burned-a-lot-of-carbon-say-hello-to-cruise-ships/)

I guess you didn't know better.