The US has introduced new rules which will limit the export of electronic chips and other technological components to China. The aim is to limit the country's access to components which can be used in supercomputers, artificial intelligence and advanced weapons. William Reinsch from the Center for Strategic and International Security explains why the move is being made now and what the ultimate aim is. Jobs growth in the US has slowed for a second month, in a sign that the labour market in the world's largest economy may be starting to cool. We hear from a job seeker, who has had 25 interviews in the last three months, but isn't giving up. A Glasgow nightclub is taking an unusual approach to climate change, with the heat from revellers' bodies being converted into renewable energy. Our reporter Shiona McCallum describes how it works in practice.