Dark Matter: A Massive Mystery

Are we on the verge of solving one of the longest standing puzzles in physics? Physicists think we're close to discovering the identity of Dark Matter, the mysterious, invisible substance that accounts for nearly a quarter of the mass of Universe. So how will scientists see it, and why does its discovery matter? Plus, genes for pain, how smartphones can save lives, whether babies can feel pain, and how to make tastier cheese... Like this podcast? Please help us by supporting the Naked Scientists