Top academics, dangerous ideas and your host comedian Susan Morrison. Dr Stephen Mansell (Heriot-Watt University) talks all things boron – the real fifth element! What has boron done for us and how will it shape the future? From rocket fuel to invisible ink, boron is far from boring. And Professor Alan Gow (Heriot-Watt University) explores dozens of “one simple” things that promise to be the secret to keeping sharp as we age.