“On Behalf of Children” is the central theme of the latest issue of the Journal of Environmental Health, a special issue that highlights the environmental challenges affecting children and adolescents. Through a collection of contributions, the issue addresses topics such as lead exposure, environmental health inequalities in childhood, environmental justice, and the protection of future generations. Together, these articles emphasize the need to make children visible in a world increasingly shaped by environmental, social, and health crises. This issue invites readers to reflect on equity, human rights, and our collective responsibility to create healthier environments for present and future generations.