This week, we find out how science can help you get from script to screen in animated movies, from the physics of balancing a giraffe on a tightrope to the researcher putting voice actors in a brain scanner. Plus, news of why we're more prone to viral infections when we're jet-lagged, how a common technique to prevent premature birth could actually cause it and did campfires kill the Neanderthals? Like this podcast? Please help us by supporting the Naked Scientists