A Montana judge handed a significant victory on Monday to more than a dozen young plaintiffs in the nation’s first constitutional climate trial, as extreme weather becomes more deadly and scientists warn the climate crisis is eroding our environment and natural resources.

In a case that could have legal reverberations for other climate litigation, District Court Judge Kathy Seeley ruled that Montana’s continued development of fossil fuels violates a clause in its state constitution that guarantees its citizens the right to a “clean and healthful environment.” Montana is one of several states that have explicit environmental guarantees written into their state constitutions.

While Seeley’s ruling won’t prevent mining or burning fossil fuels in the state, it will reverse a recently passed state law that prohibits state agencies from considering planet-warming pollution when permitting fossil fuel projects.

It is also a landmark win for young climate advocates who are turning more to the courts for […]