Fossil fuels provide the bulk of our energy supply today, but how did we get to this point? What other options are out there? Join Sara and Casey for a quick history of energy and a closer look at where we get the energy that powers our daily lives.

To complete your weekly challenges, visit:

eGRID Power Profiler: https://www.epa.gov/egrid/power-profiler#/

US Energy Mapping System: https://www.eia.gov/state/maps.php

Resources for this episode:

Energy timelines:

https://alternativeenergy.procon.org/historical-timeline/

https://www.nature.com/articles/d41586-017-07506-z

Data from the National Academies of Science, Engineering and Medicine:

http://needtoknow.nas.edu/energy/energy-use/home-work/

http://needtoknow.nas.edu/energy/energy-sources/

Power grid information and eGRID:

https://www.cfr.org/backgrounder/how-does-us-power-grid-work#chapter-title-0-2

https://www.epa.gov/egrid