The actions of some of our biggest polluters are set to be thrust into the spotlight. 

Climate activist Mike Smith has won the right to sue seven companies —including Fonterra, Genesis, and Z Energy— for their role in contributing to climate change. 

Environmental law specialist Rob Enright told Mike Hosking that the companies argued managing carbon footprints for corporates should be left to Parliament, not the courts. 

He says from one angle there's a degree of judicial activism, but on the other hand, Smith and his lawyers are relying on ancient causes of action related to property and torte law. 

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