The sheer scale and complexity of climate change can seem overwhelming. This week, therefore, we examine the topic from a different angle. Laurence Tubiana, a diplomat and climate policymaker, and Kim Stanley Robinson, author of “The Ministry for the Future,”  spoke to The Economist’s Oliver Morton to consider how science fiction can help us to stand back and imagine possible futures, as a way to inform the present. Hosted by Alok Jha, The Economist's science and technology editor.

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