Video parts 1 through 4 of Arithmetic, Population and Energy - a talk by Al Bartlett
Watch this important and engaging presentation broken into ten-minute segments, below.
You can also watch the entire one-hour video on youtube:
Arithmetic, Population and Energy - full length, by Prof. Al Bartlett.
Note that some of material in this presentation is slightly dated, but this in fact illustrates the consequences of exponential growth.