Cruise ships regularly depart major ports with thousands of passengers onboard, and they are now being called out as major sources of pollution.
At full power, the massive diesel engines propelling the Harmony of the Seas—the world's largest cruise ship—can burn about 66,000 gallons of diesel fuel a day.
That fuel produces much higher levels of pollutants than the diesel used in cars.
One cruise ship emits the same amount of air pollutants as five million cars traveling the same distance.
Full report here.