Dutch historian and writer Rutger Bregman is good at making wealthy people uncomfortable. In 2019, he called out the billionaires at Davos for their tax avoidance. His new book Moral Ambition calls on the world's best and brightest to quit their meaningless corporate jobs and start working on the world's biggest problems - from disease prevention, to climate change.

• Guest: Rutger Bregman, historian and author of Moral Ambition: Stop wasting your talent and start making a difference, Bloomsbury