For the first time, the Michigan Public Service Commission is taking into consideration a proposed project's impact on climate change. It comes as they consider Enbridge's permits to construct a utility tunnel for their Line 5 pipeline that runs through the Straits of Mackinac.

Kate Madigan is the Executive Director of the Michigan Climate Action Network, a group opposing Line 5 and the tunnel. She explains why her organization sees this as a breakthrough in protecting the environment.