Gideon Rachman talks to Professor Sir David King about the string of environmental disasters across the globe this summer. With the IPCC report this week confirming that climate change is accelerating, Sir King says that it is no longer enough to aim for net zero emissions, we must use technology to repair damage to the polar ice caps.Clips: BBC, Latin America News Agency (Reuters), Bloomberg See acast.com/privacy for privacy and opt-out information.