Brian Cox is joined by Brian Blessed and Alice Roberts. On the agenda are his TV idols from both science fiction and science fact, as well as a whole universe of other stuff.
Ever wonder how the heart symbol came to stand for the actual heart? And why do we speak of the heart as the seat of love, when love really happens in our brains? Is it true that animals only get a billion heartbeats? This week, we give you enough cool cardiac science to make your heart skip a beat.
Dame Sally Davies talks to Brian Cox about her interest in antibiotic resistance and admiration of Alexander Fleming and Howard Florey for their development of penicillin.