Gadgets & Gizmos: Superfood from thin air, anti-ageing drugs & 3D-printed houses

Steve Caplin enlightens Simon Rose as to the new protein superfood that can be made from thin air with little environmental impact. In California, human trials are starting on anti-ageing drugs. A lifebelt can be sent further when it's attached to a drone, but some of the grocery delivery companies are being closed down. Steve finds Portuguese 3D-printed houses very attractive. The famous can use AI for engaging with fans on Instagram. New plastic can biodegrade when mixed with compost. And the Dodo may make a comeback. Learn more about your ad choices. Visit podcastchoices.com/adchoices