Would a scattering of your beloved's ashes be good for plant growth? Or could it be toxic? We take this question to Cambridge University's Botanic's Head Gardener. Like this podcast? Please help us by <a href="https://www.thenakedscientists.com/donate">supporting the Naked Scientists</a>

Can eating sweets stop brain fatigue?

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...