General Environmental Studies
This search engine covers articles from many different topics, with a focus on scientific literature.
This comprehensive resource draws on the connections between the environment and a variety of disciplines such as agriculture, education, law, health and technology. Topics covered include global climate change, green building, pollution, sustainable agriculture, renewable energy, recycling and more. Indexing and abstracts for more than 612,000 records.
From the United Nations Environment Programme, the Environmental Data Explorer can generate reports of many different global environmental variables.
U.S. Global Change Research Program: USGCRP conducts state-of-the-art research to understand the interactive processes that influence the total Earth system—which includes the atmosphere, oceans, land, ice, ecosystems, and people.