Climate change is one of the most difficult legal challenges that the world faces today. Courts face new threats in combating climate change while interpreting legislation, previous case law and scientific evidence. Climate change includes issues regarding human rights, immigration rights, resource and land rights and native rights. New Zealand’s courts are limited by parliamentary sovereignty and cannot interpret the law in ways that invoke new legislation. Despite this, New Zealand’s legal system has played a critical role in climate change adaptation and policy innovation. In this project, I examine the use of the New Zealand Court system to better understand how the country is taking on the challenges climate changes poses. The project analyzes how the Environment Court tackles issues of climate change cases regarding land usage and resource management. However, it is important to discuss how the higher courts, the Court of Appeals, the High Court and the Supreme Court, settle climate change related disputes that exceed the jurisdiction of the Environment Court. All of New Zealand courts stay within the constraints of parliamentary sovereignty as they face a variety of issues resulting from climate change. To do this, I develop an original dataset. The data is from Environment Court cases, ranging from 1999 to 2021. The cases are coded to examine the court's response to these cases while taking into account the various impacts of climate change including land usage, pollution, and coastal erosion. Some cases from the higher courts are acknowledged in sections of the paper due to the importance of the case. First findings suggest that the court stays within the limits of parliamentary sovereignty and increases the legitimacy of future climate change litigation. The research at hand provides valuable insight on what future cases will cover and how courts around the world will respond.