Welcome to this, our finest seventh episode of all seventh episodes. This week the discussion leads us down a dark path. What are astronauts doing when they get bored in space? How would human life differ if we adopted the cows' four-stomach system? What's the best way to remedy catchy songs in your head? When is it acceptable to use child leashes?

Also heads up - you still have until December 3 to download Episode 5 on Soundcloud. For every 5 downloads, we're planting a tree!