Why do I fart after cottage pie? And what exactly is a fart? Do certain foods and cooking techniques affect fart frequency and potency? Like this podcast? Please help us by <a href="https://www.thenakedscientists.com/donate">supporting the Naked Scientists</a>

Can superfoods protect against cancer?

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...