'Deepfake' blurs the lines between reality and fiction
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As artificial intelligence gets more advanced, people are using the technology to manipulate videos. These clips, known as "deepfakes", use face mapping to put words in the mouths of politicians or actors. We explore the ethical questions with Professor Luciano Floridi of the Digital Ethics Lab at Oxford University. Elsewhere, a new French museum aims to make maths more accessible and in Test 24 we look at an internet radio gadget that uses bone conduction to transmit sound to the inner ear.