In the wake of the October 2018 climate report, 15-year-old Swedish student Greta Thunberg put climate change firmly in the spotlight by striking from school to sit outside the country's parliament, kick-starting the movement in the process.
Ms Thunberg said: "We have only been born into this world, we are going to have to live with this crisis our whole lives".
"There is nothing happening about this in Derry", she said.
Friday's rallies are expected to be one of the biggest global actions yet.
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- In Paris, teenagers thronged the cobblestoned streets around the domed Pantheon building. Several thousand students gathered peacefully around the landmark.
Hamilton said the climate crisis is the No. 1 threat the planet is facing, and it needs to be addressed if there is to ever be peace. One protester held a sign reading "You'll Miss The Rains Down in Africa".
Ngatimoti School year 7 student, Ada Kiddle was at the protest with a number of students from her school.
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A website used to coordinate the rallies listed events in over 2,000 cities.
"We need to hold the older generation accountable for what they are doing to us". "There's a very low threshold so we reach a huge number of people". "With our futures at stake, we call for radical legislative action to combat climate change and its countless detrimental effects on the American people".
"Students leaving school during school hours to protest is not something that we should encourage", he told public radio.
While in Auckland, thousands of protestors made their voices heard.
The world is now 1ºC warmer than preindustrial levels.
The global strike calls for the United States to re-enter the Paris Climate Agreement and commit to keeping the rise in global temperatures below 1.5 degrees Celsius.
He said students from across the province and around the world share the same sentiment.
End all extraction and burning of fossil fuels.
German Chancellor Angela Merkel and French President Emmanuel Macron have publicly welcomed the student protests, even as their policies have been criticized as too limited by environmental activists. The margin of error was about 3 percentage points.
In Stockholm, Thunberg predicted that students won't let up their climate protests. "Why go to school if we won't have a future?" asked U.S. Youth Climate Strike leader Alexandria Villasenor in an interview with the Nation.
"Here in France, we have already been striking every Friday for four weeks". "Although we can't vote, we showed our politicians what we want", said one activist, to the applause of her classmates.