The Friday Five covers five stories in research that you may have missed this week. There are plenty of controversies and troubling ethical issues in science – and we get into many of them in our online magazine – but this news roundup focuses on scientific creativity and progress to give you a therapeutic dose of inspiration headed into the weekend.

Here are the promising studies covered in this week's Friday Five:

- A diabetes drug finds a new purpose
- No pain - or mucus - no gain
- How to make cities of the future less noisy
- A new reason for mysterious stillbirths
- Making old mice younger with EVs

And an honorable mention this week: How treatments for depression can change the structure of the brain

Making Sense of Science features interviews with leading medical and scientific experts about the latest developments in health innovation and the big ethical and social questions they raise. The podcast is hosted by science journalist Matt Fuchs