Why don't spiders get stuck on their webs?

We take on your science questions: Can animals feel guilty? Could drones detect landmines? What's the furthest a paper plane could fly, and why don't spiders get stuck on their webs? Plus, a look at this week's science news - a development for Europe's Extra Large telescope, and the health challenges faced at the Rugby World Cup. Like this podcast? Please help us by supporting the Naked Scientists