For two weeks during November, countries are coming together in the city of Belém in Brazil to negotiate their responses to climate change. This will be the 30th UN climate summit, known as Cop30. It marks ten years since the negotiation of the Paris agreement (a global agreement to keep temperature rise to well below 2°C, and as close to 1.5°C as possible). For the first time, this global summit is being held in the Amazon, the largest rainforest ecosystem in the world.