Brussels; 04/06/2012 (Agence Europe) - A fortnight away from the UN Rio+20 conference on sustainable development (Rio de Janeiro, 20-22 June), the negotiations which are supposed to lead to a roadmap and a calendar for a green and inclusive economy are almost at a standstill, and the risk of failure looms large - much to the annoyance of Janez Potocnik, European Commissioner for the Environment. Disappointed at the slowness of the talks at the additional preparatory session which has just...