Royal Caribbean Cruises chief executive Richard Fain said the cruise industry has much more that it needs to achieve to improve its environmental footprint.
The head of the world's second-largest cruiseship group said that he is proud of the industry's environmental accomplishments so far but he urged the industry to do better than governments.
He told the Seatrade Cruise Global conference that Royal Caribbean is aiming to improve its environmental impact in three areas: emissions of greenhouse gases, sustainable food production and sustainable destination tourism.
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