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Climate change: Why have there been more global strikes?
More climate change protests took place around the world on Friday 27 September.
Climate activist Greta Thunberg sailed to Montreal in Canada to take part in the #FridaysForFuture Earth strikes there.
The 16-year-old activist told reporters: "It is very moving to see everyone, everyone who is so passionate to march and strike."
Hundreds of thousands of people took part in marches across Canada with the Montreal event being described as one of the biggest environmental marches in history.
In New Zealand, students marched on Parliament in Wellington, staging one of the largest protests ever held in the capital. The country didn't take part in last week's strikes because most children there had exams.
Image source, Getty Images
New Zealanders took an open-letter to parliament, signed by 11,000 people, calling on the government to declare a climate emergency.
Prince Harry backed the cause, saying the time to act is now because the evidence of climate change is clear.
He praised Greta Thunberg and the millions of children across the world for taking action.
There were also huge climate strikes in Italy, where more than one million people were reported to have taken part, as well as Spain, the Netherlands, South Korea and Argentina.