16-year-old climate change activist, Greta Thunberg, earned millions of fans after her rousing speech at the United Nations Climate Change summit earlier this year.

And now, she has called upon every single person on the planet to stand up and join her in the fight against climate change.

In an article written with fellow activists Luisa Neubaeur and Angela Valenzuela, Thunberg said that although there is now greater public awareness surrounding climate change, not enough action is being taken.

The piece, which was published in Project Syndicate, urged people to participate in the latest round of climate demonstrations, ahead of the upcoming UN climate summit in Madrid, which will begin on December 2nd.

Thousands of people are expected to attend the demonstrations, in locations around the globe.

"On the next two Fridays, we will again take to the streets: worldwide on November 29, and in Madrid, Santiago, and many other places on December 6 during the UN climate conference," the article reads.

"Schoolchildren, young people, and adults all over the world will stand together, demanding that our leaders take action – not because we want them to, but because the science demands it.

[…] We have learned that, if we do not step up, nobody will. So we will keep up a steady drumbeat of strikes, protests, and other actions. We will become louder and louder. We will do whatever it takes to persuade our leaders to unite behind science so clear that even children understand it.

Collective action works; we have proved that. But to change everything, we need everyone. Each and every one of us must participate in the climate resistance movement. We cannot just say we care; we must show it.

Join us. Participate in our upcoming climate strikes in Madrid or in your hometown. Show your community, the fossil-fuel industry, and your political leaders that you will not tolerate inaction on climate change anymore. With numbers on our side, we have a chance."

The article went onto express the authors' frustration at seeing "a string of United Nations climate conferences," which have, thus far, delivered "empty commitments".

16-year-old climate change activist, Greta Thunberg, earned millions of fans after her rousing speech at the United Nations Climate Change summit earlier this year.

And now, she has called upon every single person on the planet to stand up and join her in the fight against climate change.

In an article written with fellow activists Luisa Neubaeur and Angela Valenzuela, Thunberg said that although there is now greater public awareness surrounding climate change, not enough action is being taken.

The piece, which was published in Project Syndicate, urged people to participate in the latest round of climate demonstrations, ahead of the upcoming UN climate summit in Madrid, which will begin on December 2nd.

Thousands of people are expected to attend the demonstrations, in locations around the globe.

"On the next two Fridays, we will again take to the streets: worldwide on November 29, and in Madrid, Santiago, and many other places on December 6 during the UN climate conference," the article reads.

"Schoolchildren, young people, and adults all over the world will stand together, demanding that our leaders take action – not because we want them to, but because the science demands it.

[…] We have learned that, if we do not step up, nobody will. So we will keep up a steady drumbeat of strikes, protests, and other actions. We will become louder and louder. We will do whatever it takes to persuade our leaders to unite behind science so clear that even children understand it.

Collective action works; we have proved that. But to change everything, we need everyone. Each and every one of us must participate in the climate resistance movement. We cannot just say we care; we must show it.

Join us. Participate in our upcoming climate strikes in Madrid or in your hometown. Show your community, the fossil-fuel industry, and your political leaders that you will not tolerate inaction on climate change anymore. With numbers on our side, we have a chance."

The article went onto express the authors' frustration at seeing "a string of United Nations climate conferences," which have, thus far, delivered "empty commitments".