Environmental Issues Online This link opens in a new windowEnvironmental 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. Reflecting the multidisciplinary nature of the field of Environmental Studies, content is drawn from the social sciences, ecology and earth science, and the humanities.