Science editor Ian Sample joins co-host Madeleine Finlay to discuss some of the most intriguing science stories of the week. From a concerning rise in hospital diagnoses of constipation in children, to research suggesting that the environment is far more important for ageing and longevity than our genes, and how squeaks from genetically engineered mice are providing insight into how human language may have emerged. Help support our independent journalism at theguardian.com/sciencepod