Environmental Issues Online Environmental Issues Online brings together multimedia materials (text, archival primary sources, video and audio) around key environmental challenges, including climate change, water/air pollution, biodiversity, conservation, agriculture, deforestation and more. The database is curated around specific environmental issues and events from the 20th and 21st centuries, enabling students to build a critical understanding of the relationship between people and the environment through social, cultural, economic, political, historical and ecological perspectives.