(Photo: Adam Polselli/Flickr) There are many discordant voices on how best to tackle climate change and reach a globally just agreement. Here we begin a series of confrontations by looking at the question of the carbon trading scheme, a system set up by the Kyoto protocol to allow companies to buy, sell, and trade pollution certificates within an overall total agreed by public authorities. Unveiling carbon trade Oscar Reyes and Tamra Gilberts find that the carbon market has proven totally ineffective in curbing emissions, and has squarely played in the hands of industry and multinationals. Copenhagen: Europe in a Changing World Graciela Chichilinsky proposes a modest innovation of the carbon market and a modest expansion of existing law to incorporate “negative carbon” technologies, something she believes would provide substantial funding for Africa, Latin America, and small island states. Related Articles Stealing Copenhagen from the world, by Niccolò Milanese The European Union should make up its mind on climate change aid to developing countries, by Federico Guerrieri Climate change is not about the environment. It is about justice, by Lorenzo Fioravanti and Janine Schall-Emden