Hundreds of school students in Wales joined protesters from around the world on a strike to call for action on climate change.
Organisers said they expected more than a million young people to take part, from at least 110 countries.
Last month, the Welsh Government declared a 'climate emergency'. But the pupils protesting said politicians still must do more to protect the planet.
Beth Irving organised the protest in Cardiff. She was joined by hundreds of students in a march from City Hall to the Senedd.
Pupils from Abergavenny also marched through their town centre, calling for action.
Monmouthshire County Council said it is committed to reducing carbon emissions but does not support students missing school.