Bitcoin’s energy cost

The buzz around the cryptocurrency grows after Elon Musk’s Tesla reveals it has bought $1.5bn worth of Bitcoin. But what’s its impact on global energy use? Plus how people in China have been using the Clubhouse audio social app to discuss usually banned topics. And new figures on the performance of the Covid-19 contact tracing app used in England and Wales. Presented by Rory Cellan-Jones, with BBC senior tech reporter Jane Wakefield. Produced by Jat Gill.(Image: Representation of a Bitcoin plugged into a power outlet. Credit: Getty Images).

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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.