A Wild Hypothesis: Essay on the development of civilizations.
Debate Topic: Fermi's Paradox: A couple of possible resolutions to the question of galactic colonization.
Fermi Paradox/Drake Equation: Drake's equation attempts to estimate the number N of currently extant civilizations in our galaxy that would be able to contact each other.
Fermi's Paradox: Summary and a few probability calculations.
Fermi's Paradox: Lecture notes from a college cosmology course.
Fermi's Paradox and the Preparation for Contact Hypothesis: Suggests that aliens might be "preparing" mankind for the eventuality of meeting species from other worlds.
Fermi's Paradox II: What's Blocking Galactic Civilization? Or Are We Just Blind To It?: Article asking, "Could galactic empires exist?" and "What is keeping advanced extraterrestrials from claiming every star system in sight?"
Fermi's Paradox, The Great Silence, and The Singularity: Long article discussing the implications of what is known so far about other life in the universe.
I.T. seeks E.T.: Discusses the Allen Telescope Array (ATA) scheduled to be completed by 2005 and the search for extraterrestial life as it related to Fermi's Paradox and the Drake Equation.
Our Galaxy Should Be Teeming With Civilizations, But Where Are They?: Article discussing Fermi's Paradox and its implications.
The Drake Equation: Describes the famous formula for estimating the number and character of alien civilizations within the galaxy. Includes an online form that calculates your numbers.
The Fermi Paradox: Introductory articles on the theory.
The Possibilities of FTL: Or Fermi's Paradox Reconsidered: Discusses some of the logic behind arguments for and against humans being alone in the universe.
UFO Evidence : Fermi's Paradox: Links to articles and documents explaining or discussing the paradox.
Wikipedia - Fermi Paradox: Encyclopedia article summarizing the concept.