The rise and rise of TikTok

Why the Chinese video-sharing app seems to have Facebook worried. Plus, a leading AI researcher in Ghana tells us why algorithms used in Africa but trained on data from elsewhere could make biased decisions. And how a common definition of online abuse could help to tackle it more effectively. Presented by Rory Cellan-Jones, with BBC tech reporter Jane Wakefield, and special guest Parmy Olson, tech reporter from the Wall Street Journal. (Image: Stock photo of a woman on a beach making a smartphone video with her dog, Credit: iStock/ Getty Images Plus).

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Tech Life discovers and explains the ways technology is changing our lives, wherever we are in the world. We meet the people with bright ideas for rethinking the way we work, learn and play, and get hands-on with the products they dream up. We hold tech giants to account for their huge power to affect our lives, and ask who wins, and who loses, in the technology transformation. Tech Life is your guide to a future being made, and remade, at lightning speed in front of our eyes.