Mervyn got in touch to ask "Is sourdough bread a healthy option?" Eva Higginbotham put the question to dietician Rebecca McManamon... Like this podcast? Please help us by <a href="https://www.thenakedscientists.com/donate">supporting the Naked Scientists</a>

Can you get DNA from crematorium ashes?

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...