Jon Richardson and guests James Acaster, Rebecca Front and Ivo Graham address Jon's worries to do with Planet Earth - is the world keeping secrets from us? Is it getting smaller? And more importantly, is it totally screwed? Ivo puts his primal instincts to the test when he hunts roadkill in Cornwall, and at the end of the show, Jon does his bit to save the planet... with a pub quiz. And resident futurologist Mark Stevenson joins Jon and his guests, while Dr Jon Copley discusses the deep sea. (thetvdb.com)