OER resources in Earth and Environmental Science provide learning opportunities in areas concerned with the Earth, its natural processes, ecosystems, and the relationship between human activities and the environment. The collection may include open textbooks, digital lectures, maps, field guides, datasets, reports, case studies, visual resources, and interactive learning materials covering geology, geography, climate change, biodiversity, environmental pollution, water resources, natural hazards, conservation, and environmental management. These resources can help learners understand environmental challenges and explore sustainable approaches to protecting natural resources and ecosystems.