Letters published in the Chapel Hill News
- “Population growth overwhelms planet”, published 10 January 2007
- “Early mornings with leviathan“, published 22 November 2006
- “Infinite growth cannot be supported“,
published 22 October 2006 - “Health of economy, Earth go hand-in-hand“,
published 20 September 2006 - “Time to recognize resources limited“,
published 13 August 2006
