environmental solutions make economic sense: the italians pocket a hefty charge for refuse - about 2000 euros per portwaste is also a valuable resource that can be recycled. >> we got 854 euros for 5 cubic meters of scrap metal -- copper, steel, a mix of pretty much everything. >> it's almost 6:00 in the evening. it's rush hour in the refuse room. room service is over for the day and the chefs have finished up too. everybody's responsible for separating the garbage. ultimately, it's in everybody's interest. the proceeds from scrap metal are divided up between the team. that certainly makes the task easier. anything can't be recycled is fed into the shredder. we'll find out later what happens to it. the cruise ships generally sail at night. their carbon emissions are high -- by their own admission. >> newer ships have potential and we can expect to see important steps taken in the next few years. another factor is that from 2015, there will be stricter carbon limits. we saw with the car industry that the introduction of these limits goes hand in hand with the introduction of the technology that allows