Summer sale: Save 58%

Topic: Cruise Companies

View of the gas tanks for the liquid natural gas (LNG) drive of the cruise ships of the Carnival Cruise Line at the Neptun dockyard in Rostock, Germany, 1 December 2017. (Bernd Wüstneck/picture alliance via Getty Images)

Does Carnival's green claims hold water?

Maria Gallucci - Grist