Talc linked to cancer, and improving yoghurt with ants

In this edition of The Naked Scientists: Whether talc-based products - like baby powder - can cause ovarian cancer. Also ahead, the "Sword Dragon of Dorset" found on England's Jurassic Coast. Plus, we'll be finding out about the 'double comet' visible in the night sky... Like this podcast? Please help us by supporting the Naked Scientists