How much energy do we use, and how much energy could renewables provide? References: MacKay, D.J.C. (2009). Sustainable Energy - Without the Hot Air. Cambridge, England: UIT Cambridge Ltd. UCLA Physics and Astronomy Department. (2014). Energy Scales Table. Retrieved from http://ephysics.physics.ucla.edu/energy-scales-table State of California, Department of Finance. (2004).
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