How long will the oil reserves last? And what consequences will climate change have? The film calls on expert opinion from Joseph Stiglitz, Michael Pollan, Lester R. Brown, Wolfgang Sachs and Jeremy Rifkin about a range of questions on eco-sustainability (from global warming to renewable energy) as a way out of a situation that is increasingly threatening the environment and animal and human survival: energy efficiency, sustainable diet, political agendas. Based on an idea by Beppe Grillo and Gianroberto Casaleggio, made in collaboration with Greenpeace.<%YOUTUBE=RsP-nZkBKyM%>