• The Gauquelin planetary effects. This includes the extensive research of Michel Gauquelin, Francoise Gauquelin and more recent work by Suitbert Ertel, Arno Müller and others.
• Some implications of the "Gauquelin planetary effects".
• Science, Astrology and the Gauquelin Planetary Effects.
• The Rise and Fall of Eminence in Semantic Space
• The "Mars effect" controversy:
• A brief chronology of the controversy
• A review of a recent skeptic book outlining a study of the Mars effect
• Information about The Tenacious Mars Effect, a book co-authored by Suitbert Ertel and myself, which gives the most complete history of Gauquelin's work, the controversy over it caused through efforts by skeptic groups to debunk it and a thorough analysis of the data and methods of those groups.
• An expanded version of an article by Ertel and Irving that recently appeared in the Skeptical Inquirer.
• Links to other sites of interest - Updated May 2003
  N E W  L I N K! The Gauquelin Data online!
• Software for planetary research - Updated September 2003