Young activists victorious in fight over Montana's climate policy

A judge sided with a group of young activists' constitutional right to a "clean and healthful environment" that challenges Montana's climate policy.A Montana judge on Monday sided with young environmental activists who said state agencies were violating their constitutional right to a clean and healthful environment by permitting fossil fuel development without considering its effect on the climate.

The ruling in the first-of-its-kind trial in the U.S. adds to a small number of legal decisions around the world that have established a government duty to protect citizens from climate change.