Close up: Rio+20 summit searches sustainable solutions Leaders of more than 100 countries from around the world are meeting in Brazil this week for a major summit on the environment. The Rio+20 talks aim to protect the planet and help people out of poverty by creating a more sustainable path. The UN's own figures show in the past two decades the size of world's urban population has nearly doubled while carbon emissions and biodiversity loss have risen by around 40 and 30 percent respectively. Despite that urgency, many are sceptical Rio+20 will achieve much with leaders focused on the current state of the world economy. Environmental campaigners say priorities must change if we are to halt humanity destruction of the planet. To get more on the Rio+20 summit euronews spoke with Janez Potocnik, EU commissioner for the environment. He remains one of the chief proponents of the so called "Green Economy" to achieve sustainability. To see the full Close-up and interview with Janez Potocnik, please click on the video link above. More about: Brazil, Ecology, Environmental protection, United Nations