Kevin dispatches Jon to the US to explore the latest advances in food. Phil is off to China for a stomach-churning solution to waste, while Alice heads for Japan and an encounter with robots.
Kevin sends Jon Richardson to a town that claims to be America's most eco-friendly, Phil Wang to a futuristic farm in China, while in Japan, Alice finds out where robots go when they die.
Kevin McCloud sends Jon Richardson, Alice Levine and Phil Wang on an epic global journey to discover the extraordinary developments being made in technology - tech he thinks can save the planet.