Does being pregnant mean you have to breathe for two? Find the answer in this Question of the Week. Plus, we ask if poo power really is possible. Like this podcast? Please help us by <a href="https://www.thenakedscientists.com/donate">supporting the Naked Scientists</a>

Can we make power from poo?

Each week we set out to solve one of the world's weirdest, wackiest, funniest and funkiest scientific puzzles. And along with the answer there's a brand new question to think about for next time...