This week on the show that looks for the science behind the news, Marnie Chesterton investigates mystery after mystery. Where is Yevegeny Prigozhin, the leader of the Wagner Group, and could science help to trace him? Which animals would do best at a game of hide and seek? And we hear about the time when half the stuff in the universe went missing, and how cosmologists found it again. We continue our endless quest to identify the Coolest Science in the World. This week’s contender studies the murky side of the genome – dark DNA. Plus the low-down on the indefinite doctor’s strike in Nigeria, we look behind the latest news about our warming oceans and have you ever felt someone else’s pain? You might be the 1 in 50 people known as mirror touch synaesthetes. All that plus your emails, whatsapps and even more fruit chat. Presented by Marnie Chesterton Produced by Ben Motley, with Margaret Sessa Hawkins, Alex Mansfield, Sophie Ormiston, Katie Tomsett and Florence Thompson.