This week, how we're haemorrhaging personal information through our smartphones. We hear how snoopers can eavesdrop on your mobile signals while you're out in public to track down your home address. A computer scientist tells us what he discovered on a bunch of second-hand mobile phones picked up off eBay, and the website that grades the threat's you face from any app yu install. Plus, the stories making the headlines from the world of science and technology, including figuring out how much dark matter is in the Milky Way, and a breath test to diagnose Parkinson's Disease...