Green Tree Ants: Friend Or Foe? All over the coastal tropics of northern Australia and south east Asia, local armies of 500,000 soldiers are on standby. They wage a control war on invasive insect species. In their super-sized satellite outposts we investigate their rise to power. They are the green tree ants. This film takes a fascinating, terrifying look at their unique parallel world, and examine how science is using their combative behaviour to influence in better farming and organic production practices.