By 2050 the world population will grow to around 9 billion inhabitants. In the coming years, we face many challenges. How are we going to provide those 9 billion people with enough food? How do we solve the shortage of all kinds of raw materials? A roundtable discussion with some members of the Centre for Sustainability, a joint initiative by Leiden University, TU Delft, and EUR. RSM's Lucas Meijs took part in the discussion. Turn to page 62 for the full article.