Do you burn more calories when thinking?

This week: you asked the questions, we have the answers. Our expert panel take on queries like: why don't whales get the bends, does chloroform work like it does in the movies, and would a spinning spaceship simulate gravity? Plus, the week's science news, including the controversial sugar tax, how ExoMars 2016 hunts for life on the red planet and why NASA plan to set fire to a space station. Like this podcast? Please help us by supporting the Naked Scientists