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. And Alice heads for Japan and an encounter with robots.

Jon visits America's most eco-friendly town. Phil heads for a futuristic farm in China. And in Japan, Alice finds out where robots go to die.

Jon Richardson checks out advances in prolonging life. Phil Wang finds new ways to make a living. Alice Levine reckons robots are getting as smart as humans.