Article by Michael Shermer defines and discusses skepticism. Includes a section that asserts a skeptic can also be open to scientific reason. Written in 1992.

A bibliography from the Astronomical Society of the Pacific, for those who want to examine with a skeptical eye some of the claims at the fringes of science that seem connected to astronomy.

A doctoral student presents her investigations into the paranormal and pseudo-scientific, as well as an analysis of linguistic myths.

About well understood phenomena which are persistently presented incorrectly by teachers and writers.

Dedicated to the advancement of critical thinking, reason, intelligence, freedom of inquiry, philosophy and the scientific method. Forums include chats with the authors.

Tools for testing arguments and detecting fallacious or fraudulent arguments, based on Sagan's book "The Demon Haunted World: Science as a candle in the dark."

Skeptic provides categorized directory, both alphabetical and hierarchical, to a variety of kooks, cranks, loons, and crackpots on the net.

Features list and highlights of skeptical information available on the web.

Dedicated to debunking all manner of dubious claims.

A skeptical look at all sorts of sciences and pseudosciences.

Argues for free inquiry and thought; the philosophies of naturalism, empiricism, rationalism, and skepticism.

Regular articles on scientific evidence against superstition.

Podcast intended to encourage critical thinking in everyday situations using information about which people can reasonably agree.

Addresses the topic of skepticism and secular humanism. Page includes lectures. handouts, and online column. Also, has links to book reviews and essays.

Monitors the media in search of misleading numbers in news, politics and science.