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Douglas Reynolds presentation on Oil extraction, Bonn 2004

"Beyond Oil", a comment on Kenneth Deffeyes book by Ugo Bardi, March 2005

Gaia's sweat: fossil fuels and life on earth by Ugo Bardi, Nov 2004

Hubbert 2004: run for your life or do nothing? by Ugo Bardi, Nov 2004

The Origin of Oil: Theories and Conspiracies by Ugo Bardi, Oct 2004

The Limits of Oil by Ugo Bardi, Oct 2004

Abiotic Oil: Politics or Science? by Ugo Bardi, Oct 1st 2004

Prices and production over a whole Hubbert cycle by Ugo Bardi, Aug 2004

An example of Hubbert cycle: Whale Oil by Ugo Bardi, August 2004

Solar power agriculture presentation, June 2004 by Ugo Bardi, Evora, June 2004

Solar power agriculture by Ugo Bardi. Paper published in the proceedings of the "Renewables 2004" conference, Evora, June 2004

Ten steps for sustainable energy by Rudolf Rechsteiner, Bonn, May 2004"

The mineral economy: a model for the shape of oil production curves by Ugo Bardi. Paper published in "Energy Policy"; 2003