What shape web does a spider spin in space?

Can spiders weave webs in microgravity? Can shampooing cause hair loss? How much brain do we use at once? Can a person survive on raw food alone? This week we're answering your science questions, plus news of the IgNobel prize for research into 'hairodynamics' and a way to wipe out bad memories... Like this podcast? Please help us by supporting the Naked Scientists