Dr. Albert A. Bartlett's eight-part presentation on "Arithmetic, Population, and Energy" may be the most important video you’ll ever see. Few people understand the full implications of innocuous-sounding growth and consumption numbers. But those numbers, when examined, tell a disturbing tale.

Dr. Bartlett, professor emeritus, department of physics, University of Colorado at Boulder, believes that the greatest shortcoming of the human race is our inability to understand the exponential function, and by the end of this video series, you’ll understand exactly why that is.