What's behind the Lourve museum protestors' call for food security? Does their argument, that we need more healthy and sustainable food, have any merit? This week, we look at the critical challenge of feeding an ever-expanding global population.

Our guests are Duke Hipp, the executive director of public affairs and strategic partnerships at CroplifeAsia, and Chris Argent, the head of sustainability for Asia, Africa and Middle East at Syngenta.