The climate crisis needs all the ideas and imagination it can get. But today's guest says that liberalism - the system many of us live in, which cherishes individual freedom above pretty much all else - is a straitjacket on our imaginations, and our ability to think and act big. If it really is harder to imagine the death of capitalism than the end of all life on Earth, does that explain why most visions of the future are so, well, crap? Joining Dave this ep is Dr Christopher S...