Unit 2: Tradable permits: How carbon trading works and possible drawbacks

A great clip from the BBC explaining carbon trading and its drawbacks

< http://www.bbc.co.uk/mediaselector/check/player/nol/newsid_6720000/newsid_6728800?redirect=6728863.stm&news=1&nbwm=1&nbram=1&bbwm=1&bbram=1 >

This aticle suggests the current scheme is not working properly

http://news.bbc.co.uk/1/hi/programmes/file_on_4/6720119.stm