Gadgets & Gizmos: Jet fuel from sunlight, tech mattresses & spider micro-cranes

Steve Caplin tells Simon Rose of plans to create jet fuel from sunlight. Students have built an e-car that sucks CO2 from the air, there's a tech mattress to help with sleep, Google's new AR glasses, a way to use dead spiders to lift tiny objects, a wearable fitness tracker that detects Covid 2 days before symptoms appear and a faster, more efficient way to dig tunnels - with a big catch. Learn more about your ad choices. Visit podcastchoices.com/adchoices