Young people around the world took to the streets to call for urgent action to prevent catastrophic climate change.
The movement, launched two years ago, was inspired by Swedish activist Greta Thunberg.
The key requirement is to limit global warming to a maximum of 1.5C, as provided for in the 2015 Paris Climate Agreement.
Across Ireland, many students decided to skip school to strike for climate change, with protests in city centers in Dublin, Cork and Galway.
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