The Green New Deal unveiled last week by Sen. Ed Markey (D-Mass.) and Rep. Alexandria Ocasio-Cortez (D-N.Y.) is a powerful and ambitious statement. Its more than just a delineation of the enormous changes that will be required to stave off the most cataclysmic impacts of climate warming. It offers a portrait of the better world we can create by doing so.

It also has no chance of becoming law, not while Republicans control the Senate and climate change denier Donald Trump resides in the White House.

Markey and Ocasio-Cortez know this. Thats why the Green New Deal is framed as a joint resolution, not a formal law, meaning even if it passed, the measure wouldnt bind the government to any new policies. This distinction is key to understanding what the Green New Deal is and is not and how to usefully talk about it now. It is a major statement of the Democratic Party s political priorities. It is not a detailed blueprint of how to get there or how to pay for it.

The Green New Deals agenda, however, is clear: Dramatic action must be taken to avert a climate disaster that will otherwise render much of the world uninhabitable. This is an emergency that deserves immediate attention. Millions of lives are quite literally at stake.

Instead of extreme weather disasters, famines and wars over natural resources, the Green New Deal envisions a future in which our nation overcomes its addiction to oil, gas and coal. The federal government would need so many workers to deploy renewable energy, retrofit buildings to be more energy efficient and construct more durable infrastructure that it could guarantee a job to every American who wants one. Those jobs would pay well and offer union protections. And because climate change touches on every facet of life, the transition away from fossil fuels would happen alongside a rapid expansion of safeguards for Americans already suffering the ill effects of dirty energy, from poisoned waterways to the coal industrys monopolistic domination of entire regional economies.

One priority the Green New Deal does not include? Balancing the federal budget. Neither the Green New Deal legislation nor an FAQ released by Ocasio-Cortez last week included a detailed set of plans about how to pay for it.