BOSTON — Zero emissions by the year 2050 is the goal of a new bill filed in the Massachusetts Statehouse.

The bill serves as an update to Massachusetts' 2008 Global Warming Solutions Act and sets new emissions level requirements.

Under the proposal, the state must reduce emissions to 50% of the 1990 emissions level by the year 2030, 75% below the 1990 level by 2040, and net zero emissions by 2050.

The Global Warming Solutions Act requires the state to reduce its carbon emissions by at least 80% below 1990 levels by 2050.

The new bill was filed by Taunton Democratic State Senator Marc Pacheco and Newton Democratic State Representative Ruth Balser.