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Hundreds of cases are before courts around the globe as environmental groups - and in some cases governments - turn to litigation to deal with the impacts of warming.
In this country two years ago, a Hamilton law student sought a judicial review into New Zealand's climate change pledges under the Paris Agreement.
The case was dismissed by a High Court judge. Professor Christina Voigt, from the University of Oslo is an international environmental law expert from the university of Oslo. She talks to Lynn about the types of cases cropping up in courtrooms around the globe.
