Paying to Pollute

Permits which give companies and industries the right to pollute are traded around the world. As China opens one of the world's largest carbon trading schemes, In the Balance asks whether the system is working, and how it could be improved.
Manuela Saragosa is joined by international environmental lawyer Anthony Hobley, Dimitri Zenghelis from the London School of Economics and Eva Filzmoser, Director of the Brussels-based organisation: Carbon Market Watch.