chambers worked at the united nations university where he started its programme on sustainable development governance and on environmental diplomacy at its institute of advanced studies (unu/ias). these were programmes that conducted training for climate change negotiators and training trainers for the wto ministerial negotiations. the programmes also provided policy and expert advice on major united nations environmental negotiations. he held several positions at the un university from 1996-2008 including senior research fellow, legal officer and senior programme officer and acting deputy of the unu/ias. chambers also with a.h. zakri launched at the un university the first post-doctoral programmes. before joining the unu chambers worked at unctad on investment rules and in the transnational corporation division. chambers has worked in numerous scientific assessments including as a coordinating lead author in the millennium ecosystem assessment which won the zayed environmental prize in 2005 and global environmental outlook 4. chambers has been a senior lecturer at aoyama gakuin university, chiba university, sophia university and was a visiting professor at the university of tokyo in the law faculty.