Thomson v. Minister for Climate Change Issues

Sarah Thomson, a law student, sued the New Zealand government claiming it's greenhouse gas reduction targets were not sufficient under New Zealand's Climate Change Response Act of 2002. The court ruled that the New Zealand government should have considered the new standards for greenhouse gas reductions under the IPCC 5th Assessment Report, but made no determination as to whether the emission reduction targets met this standard or not. This is largely because the case was rendered moot by an election which brought to power a coalition which promised to set much more ambitious targets for greenhouse gas emission reductions.

http://climatecasechart.com/non-us-case/thomson-v-minister-for-climate-change-issues/

https://climate-laws.org/geographies/new-zealand/litigation_cases/thomson-v-minister-for-climate-change-issues-high-court-of-new-zealand-wellington-filed-10-nov-2015