This week, AI-based facial recognition systems go live on the front in Ukraine, ozone exposure links to teenage depression, and evidence that sleeping with the light on can adversely affect your health. Plus, as the world grapples with an energy crisis, nuclear power is going up the energy agenda. We hear about Rolls-Royce's plans for a fleet of "off the peg" small modular nuclear reactors, and the efforts to harness nuclear fusion at JET... Like this podcast? Please help us by supporting the Naked Scientists