Mike Berners-Lee, the author of There Is No Planet B and other books, joins us to talk about his newest release: A Climate of Truth: Why We Need It And How To Get It. He makes the case for a no-tolerance attitude to dishonesty in politics, media and business. We explore and critique this with him. His core claim is that enforcing the highest standards of honesty in public discourse is the best chance of getting the necessary global action to address climate change and the other crises we're facing.