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The launch of China's DeepSeek AI tool a year ago sent shockwaves through US markets and Silicon Valley. But now Chinese AI tech is being used by more and more US companies. Our North America Technology Correspondent, Lily Jamali, tells us about it. Also this week: shoppers in Denmark are using mobile phone apps to boycott some goods from overseas. And we road-test an exoskeleton taking the physical effort out of long outdoor walks. Presenter: Shiona McCallum Producer: Tom Quinn (Image: An image of a mobile phone displaying the DeepSeek name and logo on the screen. In the background are flags of China and the United States of America. Credit: Reuters.)