Jimmy Doherty sets out to discover if the world's farmers will be able to feed us in the future. Demand for food is expected to double within the next 40 years. Yet we can only grow food on four per cent of the earth's surface, the climate is changing and resources like water and fuel are under threat. Jimmy meets the men and women who claim to have new techniques and new technologies that will help meet these challenges.

Brazil
Jimmy starts his journey in the giant of South America - Brazil. He discovers how to turn poisoned land into a powerhouse of world food production, joins sugar cane cutters to see how Brazil has replaced half of all its petrol use with biofuel, and finds a way to save Caiman alligators from poachers. In the Amazon, Jimmy meets an unlikely cattle rancher who claims he can save the rainforest.

Australia
Jimmy travels to Australia, where he visits the wheat belt of Western Australia to see if farmers can overcome the global problem of soil salinity. He heads deep into the outback to catch wild animals, and takes a trip to the Murray-Darling river basin to see if vineyards can still produce good wine with only half as much water.

USA
Jimmy visits the USA, the greatest food-producing country on earth. The farmers have put their faith in new technology to increase food output, but is it enough? In search of answers he visits the tomato fields and bioscience labs of California,a high-output pig farm in Iowa, and gets a taste of the Wild West while herding buffalo in South Dakota.
Yet it's a farm in North Carolina that offers the most surprising approach of all.

Kenya
Jimmy visits Kenya, a country that struggles to feed its own population. Jimmy meets farmers near Lake Victoria who use ingenious new ways to combat pests, and scientists who produce bananas in the lab. As he travels across the country, Jimmy picks roses, milks camels and discovers Masai sheep could save farmers around the world billions of pounds. But can Kenya ever feed itself?