In this week's podcast, we're taking on your questions! From how we make decisions to why do we go temporarily deaf when we yawn and if light wears out, these are some of the many conundrums you asked and we answered with the help of an expert panel. Plus, the top headlines in the world of science, including the four new elements discovered, why you can blame your neanderthal heritage for bad allergies and how Harry Potteresque screens could be the next big thing...