We find out if Earth's expanding human population will affect water supplies. Plus we ask, does the new anti-fat fad Shrinking Violet work? Like this podcast? Please help us by <a href="https://www.thenakedscientists.com/donate">supporting the Naked Scientists</a>

Will a body wrap help me lose weight?

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...