This learning activity examines the unique vulnerabilities children face from environmental health hazards and the role of nurses in addressing these concerns. It explains how children's developing bodies, physiological characteristics, and behaviors create distinct exposure pathways compared to adults. The content covers traditional environmental threats (lead, air pollution, pesticides) and emerging concerns (climate change, chemical exposures, microplastics, digital environment). The material emphasizes environmental health disparities and provides practical guidance for nurses on conducting comprehensive assessments and implementing interventions across various clinical settings. It highlights the importance of developmental considerations in risk assessment and the nursing role in reducing exposures through education, advocacy, and policy change to protect children's health.