Judge Rules Boston Climate Change Protest A Legal 'Necessity'

This week, a Boston judge made a potentially landmark ruling on using climate change for what's known as a "legal necessity defense," in the case of the protesters of the West Roxbury gas pipeline.

Nancy Gertner, former Massachusetts federal judge, senior lecturer at Harvard Law School and WBUR legal analyst. She tweets @ngertner.

Tim DeChristopher, founder of the Climate Disobedience Center and one of the defendants in the West Roxbury natural gas pipeline protest case. He tweets @dechristopher.