This week, Natasha from Australia wrote in to ask why her stomach grumble when she is hungry. Lucka Bibic enlisted Dr Roshini Raj from Medical Trinity Center in New York to find out what causes the rumbly in our tumbly! Like this podcast? Please help us by <a href="https://www.thenakedscientists.com/donate">supporting the Naked Scientists</a>

If we slice the earth in half what would it look like from space?

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...