Introduction

Beginning in the Autumn 2010 term, I am leading three related courses at the Tallwood facility of OLLI at George Mason University: Autumn 2010 World Water Supplies -  the Coming Crisis; Spring 2011 World Food Supply - Famine on the Horizon?; and Spring 2012 World Population Dynamics and Growth (that last title may change as the proposed course is rather far into the future). This blog is intended to support those courses with comments on matters related to the courses, responses to questions and comments raised in class sessions, recommended readings, links to useful supplementary materials, and anything else that seems worth pursuing in the informal context of a blog.