We find out how developing bird embryos get their oxygen whilst trapped inside an egg. Plus, we ask what makes breakfast cereals go, "snap, crackle and pop?" Like this podcast? Please help us by <a href="https://www.thenakedscientists.com/donate">supporting the Naked Scientists</a>

Snap, Crackle and Pop!

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...