Dr. Charles Hall may not be a name you instantly recognize, but it should be.

Now a Professor Emeritus of the College of Environmental Science and Forestry, Dr. Hall is a rigorous researcher of energy, oil, biophysical economics -- and was a critical early pioneer in developing the key resource metric of Energy Returned On Energy Invested (EROEI).

After a life's career of looking at the world through the lens of EROEI, Hall is very concerned that, as a global society, we are hurtling towards an energy crisis that will forcefully (and likely painfully) downshift our standard of living within the lifetime of the current generation.

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