by 
Tree Hugger
The article was orginally published at: A Floating Green Roof: Cruise Ship Goes "Green"?
Image credit: Green Roof Service
Cruise Ship Features Green Roof and other Efficiency Measures
Cruise ships and shipping are a massive source of pollution. Moves are underway to explore biofuels for cruise ships, and to utilize cruise ship traffic as a force for conservation- you can even take a look at Kristin’s list of <a href="http://www.treehugg…
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