The interpretative clarifications under the UN Convention on the Rights of the Child on children’s human right to a healthy environment help illuminate areas for transformative change through the evolutive interpretation and implementation of international environmental law. This article explores how the 2023 UN General Comment No. 26 on children’s rights and the environment, with a special focus on climate change, sheds new light on: a holistic approach to environmental protection; the minimum content of State obligations, including with regard to inter-generational equity; a more ambitious interpretation of precaution; and the inclusiveness of international environmental law fora.