A dooming silence woke up Ivan Macfadyen for the devastation in the Pacific ocean.

What comes to your mind when you think of pollution? Thick black oil smeared on clean ice? Small piping shorebirds strangled by old plastic? According to the Nature and Biodiversity Conservation Union (NABU), you should be thinking of something entirely different - cruise ships.

The Durban Platform for Enhanced Action, the key outcome of the 17th Conference of Parties (COP17) to the UN Framework Convention on Climate Change (UNFCCC) in December 2011, has been dubbed by many as the platform for inaction, with the decision to find agreement by 2015 being seen as the agreement to disagree at a later date.