Can cold water cause weight loss, is my mother-in-law turning into a reptile and why doesn't a mobile phone interfere with itself are all answered in this week's Naked Science Question and Answer Extravaganza. We also find out about a new way to keep track of your favourite online bands and musicians, and hear how the whole world harmonises - turning news into music in just three hours! Plus, in Kitchen Science, Dave pulverises an egg to explain the basis of air pressure, and for Question of the Week Diana finds out whether alcohol can rehydrate a lost traveller in the desert. Like this podcast? Please help us by supporting the Naked Scientists