Gadgets & Gizmos: Smart windows, smart pens, a walk-through kaleidoscope & sugar cane bollards

After waxing lyrical about progress made in nuclear fusion, tech guru Steve Caplin discusses smart windows and smart pens, how to repel mosquitoes, the world's biggest walk-through kaleidoscope, a new ultra-strong material developed at MIT, adding touch to the VR experience, a Covid breathalyser, sugar cane traffic bollards and an electric car that can power your house for three days if there's a power cut. Learn more about your ad choices. Visit podcastchoices.com/adchoices