Should cruise ships be banned?

The world's biggest cruise ship has set sail but is it good for the planet?

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In January, the world’s largest cruise ship made its first ever journey, between Miami, in the US, and the Caribbean. The Icon of the Seas can hold almost 10,000 people – 7,600 guests and 2,350 crew members – and features more than 20 different places to eat, seven swimming pools, a mini-golf course, a rock-climbing wall and an ice skating rink. However, despite cruise ships being impressive in size, some people are concerned about the harm they are doing to the environment.

Smooth sailing?