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:- The new stars of brain cancer research- Scans inside the body can predict how patients will do after surgery- Improving cognition in people with Down's Syndrome- The need for speed if you want to reduce your risk of dementia- Two women, one man and a babyAn honorable mention for this week's Friday Five: a breakthrough in understanding the Greek goddess of motherhood