How do babies stay upside down in the womb for so long? We got summer intern Claudia Esftaphiou to do a headstand in the office to try to get to grips with the answer! Like this podcast? Please help us by <a href="https://www.thenakedscientists.com/donate">supporting the Naked Scientists</a>

Sweeties: suck or crunch?

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...