There is a growing concern in advanced economies that governments are running out of options to stabilize a precarious and volatile global economic system. Since the onset of the Great Recession in 2008, the Fed’s large-scale bond purchases, called quantitative easing, have helped push interest rates close to 0% and have done more to serve Wall Streets’ interests by way of propping up the stock market than by boosting the overall economy for average Americans.

These have proven to be temporary fixes, providing a semblance of “recovery” without addressing the underlying problems in the real economy: stagnating demand, lack of productive investment, staggering inequality and concentration of wealth—not to mention the climbing cost of climate-related disasters, like floods and wildfires, which have cost $26.9 billion dollars in 2016 alone. As recent warning signs in the U.S. market have shown, we are hardly out of the woods when it comes to preventing another big crash. Keeping interest rates super low has only produced the illusion of a healthy economy. Without sound fiscal policies targeted to help ordinary Americans, economic growth will stagnate.

Lasting economic recovery means going back to the basics: making things, buying things, and shoring up local communities and small businesses, which have always been the economic bedrock of our nation. It’s time to stop throwing good money after bad and address both economic and climate crises head-on by investing in the sectors most primed for innovation and growth: clean energy, eco-friendly infrastructure, sustainable food systems, public transit, and more—which also happen to be the tools we need for planetary survival.

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I believe the U.S. economy needs a Green New Deal: an ambitious yet secure economic and environmental program that will revive the economy, turn the tide on climate change, and make wars for oil obsolete—allowing us to cut our bloated, dangerous military budget in half. Building on the concept of Franklin D. Roosevelt’s New Deal, the Green New Deal calls on communities, government, and ordinary people on the scale of World War II to transition our energy system and economy to 100% clean, renewable energy by 2030.

The author of the best-known series of studies on transitioning to 100% clean energy, Stanford University professor Mark Jacobson, asserts that it is technologically and economically feasible. Bill Nye and others note that we have the technology to make this transition possible—and the science shows that we must. The only missing ingredient is political will.

Our government spends billions of dollars every year on activities that will make our planet uninhabitable: war, fracking, the construction and use of oil/gas pipelines, deforestation, industrial agriculture, and other acts that are threatening ecosystems and taking greenhouse gas emissions past the tipping point. The Green New Deal will redirect that money toward the real job creators who can create healthy and sustainable communities. We call for investment in green businesses, cooperatives, and non-profits, providing grants and loans with emphasis on small, locally based enterprises that keep wealth circulating in the community rather than offshoring profits to transnational corporations.

The Green New Deal will invest in clean energy technologies that are ready to go now, and redirect research funds from fossil fuels and other dead-end industries toward developing wind, solar, tidal, and geothermal energy. If the 50 U.S. states converted to 100% clean energy, the economy would generate 5.9 million lifetime construction and operation jobs for the energy facilities alone, which more than replaces the 3.9 million jobs displaced in the conventional energy sector.

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The Green New Deal will create up to 20 million jobs in green energy, agriculture, transportation, and essential services, directly and indirectly, through a nationally funded, locally controlled employment initiative, replacing unemployment offices with local employment offices. Communities will use a process of broad stakeholder input and democratic decision-making to fairly design and implement these programs. The government will be the employer of last resort, offering jobs meeting community-identified needs in the public and non-profit sectors to take up any slack in private-sector employment.

A job guarantee is good for the private sector, as it ensures that domestic demand never collapses as much as it does in the current system, with chronically low wages and structural unemployment and underemployment. It would also lift incomes for the most vulnerable households, helping to significantly reduce income inequality. We also call for canceling student debt, which will unleash a generation of young people to use their dollars toward consuming goods and starting businesses, putting their training, resourcefulness, and creativity to work to shape the economy of the future.

Of course, the big question is: How much will it cost? Estimated initial costs for the transition require an additional investment of 1% of global GDP (about $185 billion to $200 billion for the U.S.), plus $400 billion for public jobs programs. Overall, my team and I estimate that the government will need initial revenues of approximately $700 billion per year for the first few years to kick off the Green New Deal. The annual cost of the program is expected to decline rapidly over time as the stimulus takes effect and savings from other sectors offset the need for new sources of government revenue.

Much of those capital costs could be covered by diverting existing investments in nonrenewable energy. Based on figures from the International Energy Agency, it is estimated that the U.S. could build a 100% renewable energy system at costs comparable to or less than what the country would have to spend to continue its reliance on dirty energy. Prices for renewable energy have also been falling very fast in recent years due to performance improvements, which will reduce costs over time. In many parts of the United States, wind is now the cheapest source of electricity, and solar is on track to be the cheapest source of power in many parts of the world. Other costs could be covered through a Wall Street financial transaction tax, as well as a carbon tax of $60 per ton, which would raise $360 billion per year and make price signals more favorable toward private-sector development of renewable energy.

When we make these critical investments, our economy will be revitalized, and our national security will no longer be vulnerable to disruption of oil supplies. Wars for oil will be obsolete, which will allow hundreds of billions of dollars per year in the discretionary budget to be put toward production at home instead of destruction abroad.

Using renewable energy instead of coal and gas will also mean huge savings in health care costs because the foundations of a green economy—clean energy, a pollution-free environment, healthy food, and active transportation—are also the foundations of human health. The Green New Deal pays for itself within a matter of years through the prevention of chronic disease, which consumes a staggering 75% of our $3 trillion in annual health care expenditures.

All in all, the Green New Deal is an investment in our future that will pay off enormously as we build healthy, just, and sustainable communities. By addressing the root problems of global financial fragility, we can create a stable climate—pun intended—for long-term investment and economic growth, while ensuring that we also leave a livable world for future generations.

Dr. Jill Stein is a physician, environmental activist, and a mother on fire. She is the 2016 Green Party candidate for President of the United States.