While COP30 takes place in Brazil, more than 80 pupils have been holding their own climate talks closer to home.
The COP30 climate simulation negotiation brought pupils from 28 schools to Belfast Castle, where they represented countries, campaigners, lobbyists and journalists.
This year's event was the first to bring together young people from both sides of the border, with four pupils from Dundalk Grammar School taking part.
The pupils negotiated with each other to make international deals, and made speeches - one of which was even interrupted by a mock climate protest.