Energy

. . . these sources can help you find evidence to answer your question or validate/invalidate an answer.

BETTER source. Articles and book chapters that have been used and cited by multiple Grinnell students and have been highly cited in the scientific literature.
Common searches:

BETTER source; domestic and international coverage; thousands of sources.

Information from the U.S. Department of Energy on alternative fuels as defined by the Energy Policy Act of 1992, including biodiesel, electricity, ethanol, hydrogen, natural gas, and propane.

All forms of energy including fossil fuels.