On tonight's programme, Geoff finds out how much it will cost to install escalators into his house, plus we're joined by Dr Peter Bentley, author of The Invention of Numbers, who has quite the revelation about Pythagoras.
On tonight's programme, Geoff finds out how much it will cost to install escalators into his house, plus we're joined by Dr Peter Bentley, author of The Invention of Numbers, who has quite the revelation about Pythagoras.