Chatbots changing minds

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A study found AI chatbots can persuade us with fake facts. We explore what this means for politics. Then we speak to author of The Web Beneath the Waves, Samanth Subramanian, about the importance of undersea cables. Plus: The scientists working together with nuns to save salamanders in a lake in Mexico. Presenter: Chris Vallance Producer: Imran Rahman-Jones Editors: Monica Soriano & Tom Singleton (Image: A colourful composite of a woman with her chin resting on her hands, looking confused. Behind her is an illustration of a laptop. Credit: Getty Images)