![Bill McKibben](https://assemblyseries.wustl.edu/files/2015/08/bill-mckibben-1iwxlmn.jpg)
Bill McKibben
On November 1, 2012 at 7 PM in Graham Chapel, prominent environmental author and advocate Bill McKibben talked about “350: The Most Important Number in the World.”
![Jeremy Rifkin](https://assemblyseries.wustl.edu/files/2015/08/jermey-rifkin-2am7yc5.jpg)
Jeremy Rifkin
On October 11, 2012 at 12 PM in Graham Chapel, international economic forecaster and social observer Jeremy Rifkin talked about “The Third Industrial Revolution: How Lateral Power is Transforming Energy, the Economy and the World.”