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Spurred by what they see as a sluggish, ineffectual response to the existential threat of global warming, student activists from around the world are skipping school Friday, for what organizers call a

The young activists are protesting as the U.N. prepares to hold its on Monday in New York City.

The strike's figurehead is 16-year-old Swedish activist Greta Thunberg, who traveled from Sweden to New York . A little over a year ago, Thunberg began her school strike for the climate by herself, outside the Swedish Parliament.

Support for a school climate strike has since spread . In the past year, Thunberg has been nominated for the Nobel Peace Prize by Norwegian lawmakers. She's also met with Pope Francis and lawmakers in several countries.

"We are currently on track for a world that could displace billions of people from their homes," Thunberg warned this week as she accepted Amnesty International's Ambassador of Conscience Award. She ended her acceptance speech with a call to action: "See you on the streets!"

In New York City, thousands of students are expected to fill the streets alongside Thunberg because, as the , it is giving strikers excused absences. In Oregon, is doing the same.

Strikes also are planned in rural areas where just a few dozen protesters are expected. Nicholas DuVernay, 17, organized a protest in his politically conservative small town of La Grande, Ore.

"Since, probably, the beginning of my junior year in high school I've been interested in climate science and pretty passionate about environmental topics," says DuVernay, who plans to study climate science when he attends college next year.

A this week shows a majority of teenagers believe human-caused climate change will cause harm to them. And a quarter of the poll respondents said they have participated in a school walk-out, a rally or contacted a government official on the issue.

There have been . But this time, students are asking adults to join them.

At the University of Nevada, Reno, Stallar Lufrano-Jardine, 36, is setting up an event on the campus where she's an employee and student.

"I'm bothered by the lack of movement to make meaningful advances to solve the climate crisis," says Lufrano-Jardine.

But it's clear younger people are leading this movement. And they say most adults — especially policy-makers — are moving far too slowly.

Strike organizers have a that includes "respect of indigenous land, sustainable agriculture, protecting biodiversity, environmental justice and a just transition away from fossil fuels and towards renewable energy," said 17-year-old Baltimore resident and organizer Nadia Nazar.

Many of those demands are part of the , which was crafted by progressive Democratic lawmakers but so far hasn't gone anywhere in Congress.

At a Capitol Hill press event this week, Nazar said she hopes the proposal defines her generation. "I am not a part of Generation Z. I am a part of Gen GND — the generation of the Green New Deal," she said as supporters cheered.

Also on Capitol Hill this week, Thunberg and other activists . Louisiana Republican Rep. Garret Graves told them that climate change has exacerbated the loss of his state's coastline.

"I agree that we need to take aggressive action. I agree that we need to ensure that we move forward in a sustainable, rational manner," Graves said.

But his idea of what that means is very different than the activists' vision.

For instance, Graves agrees with President Trump on the need to . Graves told the student organizers the pact allows China to continue emitting more carbon dioxide while the U.S. cuts emissions. "Paris and its related pledges would undermine U.S. competitiveness," his spokesman said.

Graves got immediate pushback from the young activists, including 17-year-old Jamie Margolin from Seattle, who asked how Graves will respond to questions from his children and grandchildren about whether he did enough to address climate change.

"Can you really look them in the eye and say, 'No, sorry, I couldn't do anything because that country over there didn't do anything, so if they're not going to do it then I'm not.' That is shameful and that is cowardly," Margolin said.

Organizers are saying this climate strike will be the largest yet. More than have pledged to join. Some companies also have signed on, including and .

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