Calling the global climate crisis both the greatest threat facing the United States and the greatest opportunity for transformative change, Sen. Bernie Sanders on Thursday unveiled a comprehensive Green New Deal proposal that would transition the U.S. economy to 100 percent renewable energy and create 20 million well-paying union jobs over a decade.

"If fossil fuel executives and lobbyists reading Sanders' plan are scared, they should be."

—Jack Shapiro, Greenpeace

"This is a pivotal moment in the history of America—and really, in the history of humanity," Sanders, a 2020 Democratic presidential candidate, said in a statement.

"When we are in the White House," said the Vermont senator, "we will launch the decade of the Green New Deal, a 10-year mobilization to avert climate catastrophe during which climate change, justice, and equity will be factored into virtually every area of policy, from immigration to trade to foreign policy and beyond."

The climate crisis is the greatest challenge facing humanity. It's also our single greatest opportunity to build a just and equitable future. We are going to create 20 million jobs and an economy that works for all. It's time for a #GreenNewDeal. https://t.co/NteQAl2D7M — Bernie Sanders (@BernieSanders) August 22, 2019

Sanders' plan for an aggressive 10-year mobilization to combat the climate emergency comes amid warnings from the international scientific community that global greenhouse gas emissions must be slashed in half by 2030 to avert planetary catastrophe.

Across the world, Sanders noted on his website, there is an overwhelming abundance of evidence testifying to the severity of the climate crisis and the urgent need for bold action.

"The Amazon rainforest is burning, Greenland's ice shelf is melting, and the Arctic is on fire," Sanders wrote. "People across the country and the world are already experiencing the deadly consequences of our climate crisis, as extreme weather events like heat waves, wildfires, droughts, floods, and hurricanes upend entire communities, ecosystems, economies, and ways of life, as well as endanger millions of lives."

To confront the emergency, Sanders' Green New Deal plan would:

Reach "100 percent renewable energy for electricity and transportation by no later than 2030 and complete decarbonization by at least 2050";

Invest $16.3 trillion in creating 20 million jobs, developing sustainable infrastructure, and supporting vulnerable frontline communities;

Assist international efforts to reduce carbon emissions by providing $200 billion to the Green Climate Fund and rejoining the Paris climate accord;

Ban fracking, mountaintop removal coal mining, and imports and exports of fossil fuels;

"Prosecute and sue the fossil fuel industry for the damage it has caused"; and

Ensure a fair and just transition for workers currently employed by the fossil fuel industry.

According to the Sanders campaign, the senator's plan would "pay for itself over 15 years" by forcing the fossil fuel industry to "pay for their pollution," eliminating fossil fuel subsidies, slashing military spending that is dedicated to "maintaining global oil dependence," raising taxes on the wealthiest Americans, and more.

Read the full text of the campaign's Green New Deal plan here.

We need a president who will face down the greed of fossil fuel executives and the billionaire class who stand in the way of climate action. I welcome their hatred. We will enact the #GreenNewDeal and bring the world together to defeat the existential threat of climate change. — Bernie Sanders (@BernieSanders) August 22, 2019

"Bernie promises to go further than any other presidential candidate in history to end the fossil fuel industry's greed, including by making the industry pay for its pollution and prosecuting it for the damage it has caused," reads the campaign's website.

"Any serious plan to address climate chaos must start with a ban on fracking and a halt to all new fossil fuel development. Sanders understands this, and he has set the bar for worthwhile climate policy discussion."

—Wenonah Hauter, Food & Water Action

"And most importantly," the website continues, "we must build an unprecedented grassroots movement that is powerful enough to take them on, and win. Young people, advocates, tribes, cities and states all over this country have already begun this important work, and we will continue to follow their lead."

Jack Shapiro, senior climate campaigner with Greenpeace USA, said, "If fossil fuel executives and lobbyists reading Sanders' plan are scared, they should be."

"Sanders has talked the talk on climate change from day one of his campaign. This plan shows he's ready to walk the walk, as well," Shapiro said in a statement. "At this point in the race, speeches and half-measures don't cut it."

Here’s what people need to understand about @BernieSanders’ new climate plan:



This is it.



This is our one chance to build a just & equitable world before the climate emergency tips out of control.



We need to give it everything we’ve got. This plan does.https://t.co/bRdZerEchx — Eric Holthaus (@EricHolthaus) August 22, 2019

Wenonah Hauter, executive director of Food & Water Action, applauded Sanders' proposal as a "game-changer."

"With this aggressive and inspired plan, Senator Sanders has set a clear benchmark for meaningful climate and energy policy in the presidential race and beyond," said Hauter. "This plan includes the bold action and rapid timelines required to adequately address the magnitude of the climate crisis we face."

"Most importantly," Hauter added, "this plan would ban fracking, the toxic, polluting drilling method responsible for almost all oil and gas production in America today. Any serious plan to address climate chaos must start with a ban on fracking and a halt to all new fossil fuel development. Senator Sanders understands this, and he has set the bar for worthwhile climate policy discussion, here and abroad."