­7 billion people – is this too much for our planet? Will a battle for resources only intensify?  Will there be any room for sustainable development amid the struggle for survival? Is the world becoming less secure and more unpredictable? And can global interdependence force people to build a more equal and just world? What are the overriding challenges to be addressed in the first place? And are falling living standards inevitable? CrossTalking with Babatunde Osotimehin, Martha Madison Campbell and Matthew Connelly on October 31.