An Alaska law promoting fossil fuel development infringes on the constitutional rights of young residents to a healthy environment, a lawyer told Alaska Supreme Court justices on Wednesday.

A lawsuit filed by 16 Alaska youths claimed long-term effects of climate change will devastate the country’s northernmost state and interfere with their constitutional rights to life, liberty and public trust resources that sustain them.

The state’s legislative and executive branches have not taken steps to lower greenhouse gas emissions and adopted a policy that promotes putting more in the air, said attorney Andrew Welle of the Oregon-based Our Children’s Trust group.

“This is an issue that is squarely within the court’s authority,” Welle said.

Assistant Attorney General Anna Jay urged justices to affirm a lower court ruling rejecting the claims. Ultimately, the climate change issues raised by Alaska youth must be addressed by the political branches of government, she said.

“The court does not have the tools to engage in the type of legislative policy making endeavor required to formulate a broad state approach to greenhouse gas emissions,” she said.

The 16 youths sued in 2017 and claimed damages by greenhouse gas emissions are causing widespread damage in Alaska. The lawsuit said the state has experienced dangerously high temperatures, changed rain and snow patterns, rising seas, storm surge flooding, thawed permafrost, coastal erosion, violent storms and increased wildfires.