Tech Tent

As Google's boss, Sunder Pichai, says he doesn't fully understand its AI products, tech investor Ian Hogarth tells us it's time for a public debate on the technology's future. Reporter Michael Kaloki joins us from Nairobi to explain how the legal battle between Facebook and its Kenyan moderators is intensifying. Alasdair Keane meets the amateur composer crafting the sound of all human knowledge for Wikipedia. And our Click colleague Lara Lewington tells us about the tech entrepreneur devoting his time - and money - to finding ways to extend healthy human life.(Picture credit: Getty Images)