There's a tech revolution unfolding in Australia -- but it's not happening where you might expect. A team of scientists led by internationally renowned roboticist, Professor Salah Sukkarieh, are opening up a new world of farming science; one that could give Australian farmers more control over their future than ever before. Catalyst joins engineers from the Australian Centre for Field Robotics as they explore the world of agriculture to develop robots and create smarter ways of farming. But are these prototype robots up to the many tasks of a farmer? Will they change the way we've been farming for generations? Can the robots lead the farmers (and their cattle) to greener pastures? Australian farmers are up against it. But help is at hand.