Data to support your research in environmental studies can come from a variety of sources, and may be collected and produced by researchers and scholars in a variety of disciplines too. Depending on the nature of your topic, you may need data collected or disseminated by sociologists or demographers, biologists, earth scientists, chemists, economists, public heath researchers, etc.
Some strategies for finding data:
Statista.com consolidates market and consumer statistical data on over 80,000 topics from more than 22,500 sources. Results are presented in graphical display with Excel and pdf download options. This is a good site for energy and environmental data.
Search several EPA databases at the Envirofacts site for information about environmental activities that may affect air, water, and land in the U.S.
Use these calculators