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