Alphabet's research and development lab X is the breeding ground for Google's biggest technological bets, including self-driving cars and a network of internet-providing balloons. Astro Teller, the entrepreneur and scientist at the helm of X, talks to the FT's Richard Waters about the new technologies he is helping to bring to market, and what he has learned in the six years of running an innovation factory. See acast.com/privacy for privacy and opt-out information.