Thousands of people from all around the world came to Paris this week to talk about the impact of artificial intelligence in society. The rapidly growing technology can emulate a human response and has the potential to learn quickly. This allows it to generate images and words, for example, and do a range of jobs faster and cheaper than humans. We hear from three tech entrepreneurs in Ghana, Denmark and Nigeria where AI is making a positive impact on their businesses. There are other industries, however, where workers fear losing jobs due to AI. Two writers from the UK and the United States share how the technology has reduced some of their work prospects.