The Torres Strait Islanders' case against the Federal Government has been lost,  with the Australian Federal Court finding the Government does not owe a duty of care to them,  to mitigate climate change harms. It's the latest in a string of attempts to use the law to steer the Government on environmental issues. The next significant case will be the decision of the International Court of Justice about whether States are responsible for each other's climate harm. 

• Guest: Dr Chris McGrath, Brisbane-based barrister and Adjunct Associate Professor at University of Qld School of the Environment, environmental lawyer who has been involved in multiple climate change litigation cases over the past 20 years 
• Producers: Ann Arnold and Ali Benton