Gadgets & Gizmos: Colonies on asteroids, unfogging glasses & an AI Christmas message

Steve Caplin looks at a solution to the killing of bats by wind turbines, how space colonies might exist on asteroids, how New Zealand plans ridding the country of smokers, at a possible answer to foggy glasses, Channel 4's AI-written, robot-delivered Christmas message, at Westminster Council's solution to street urination and at a licence-free plane, which you have to build yourself. Learn more about your ad choices. Visit podcastchoices.com/adchoices