Adam Gopnik presents his formula for a happy marriage - lust, laughter and loyalty.
BBC Radio 4
Adam Gopnik reflects on why we overrate masters and underrate mastery.
Lisa Jardine reflects on comets and the lessons to be learned from early astronomers.
Lisa Jardine celebrates the achievements of wartime mathematician Dame Mary Cartwright.
Lisa Jardine celebrates the influence of art connoisseur Sir Denis Mahon.