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Hard Science and Skepticism

B612 Foundation

The goal of this group is to alter the orbit of an asteroid by the year 2015.

Bad Astronomy

Debunking popular misconceptions and myths about astronomy – especially myths created by Hollywood.

Bad Psychics

An ever-growing collection of videos that expose "psychics" as charlatans.

Brad Hein's Nanotechnology Site

Carl Sagan Productions

Committee for Skeptical Inquiry

Formerly known as CSICOP, this is the most famous of the skeptical organizations.

Critical Thinking on the Web

An Australian-based group of skeptics and freethinkers who provide links to useful skeptical Web sites.

Dr. Megavolt

Master of electricity and Tesla coils…and an amazing science performer.

Professor Stephen Hawking's Home Page

Jillian's Guide to Black Holes

Jim Lippard's Home Page

Millenium Project (Not a misspelling!)'s index of frauds and quacks.

Penn & Teller's Bullshit


Useful information about medical frauds and quacks of all sorts.

James Randi Home Page

Fraudbuster, psychic-buster, and the most famous of the debunkers.

SETI: The Search for Extraterrestrial Intelligence


Skepticism from a feminine point of view.

The Skeptics Resource Page

Another list of useful starting points to skeptical sites.

The Skeptic Tank

Internet skepticism that gets in the face of paranormal kooks - and they don't like it.

Skeptics Dictionary

The definitive online guide to skepticism.

The Skeptics Guide to the Universe

Regular weekly podcast of the New England Skeptical Society.

Skeptical Investigations

This really should be on our Pseudo-Scientific Wackos page, but naturally they'll get all upset if they're not listed here…because they claim to be "real" skeptics. They investigate the skeptics in order to make them seem untrustworthy.


A wiki project devoted to skepticism.

The Space Telescope - European Coordinating Facility

Watching You

Lou Minatti's insightful look at "New Age" silliness online.

World Future Society

I want my jet pack and flying car NOW, dammit!

ZOMG It's Criss

What the skeptical world needs – a skeptic with her own YouTube channel who takes on pseudosecience, creationism, and other morons…and she's a smokin' hot babe, too.