Changes to our genetic modification laws have our scientists and politicians struggling to agree on a way forward. Over the last few weeks we have been discussing various aspects of the gene tech bill which has stalled in Parliament. We've spoken to Professor Andrew Allan and Professor Jack Heinemann for their take on the issue. Today... we want to delve into the labelling of food... because how would we know if the food we're eating is genetically modified? Emily King is a food systems expert and the author of Re-food - she is urging caution over changes to our GM laws and labelling.