Treebeard's Links

 About.com Puzzles and  lots of originals and links
 Absurd Math: Prealgebra from another dimension  Interactive stories with math problems. I haven't tried it.
 ACM International Collegiate Programming Contest Problem Archive  Lots of tricky programming puzzles
 The AIMS Puzzle Corner
 AFU and Urban Legends Archive and FAQ  good stuff from alt.folklore.urban
 The Answer Bank  Q&A about anything, you can post your own questions
 Archimedes' Laboratory  nice collection of puzzles and games
 Ask Science Questions  metalist of "Ask a [***] Scientist" Web sites
 Ask A Physicist  from NASA Cosmic and Heliospheric Learning Center
 Ask A Scientist  medical and biology Q&A from Howard Hughes Medical Institute, with nice page on Becoming a Scientist
 Ask The Astronomer  Dr. Sten Odenwald huge collection of Astronomy Q&A
 Ask Bob  Science Q&A by Quirks and Quarks radio show by host Bob McDonald
 Ask Discover  general science Q&A from Discover Magazine
 Ask Dr. Math
 Ask Dr. Neutrino  Physics Q&A
 Ask Dr. Science  funny stuff from Duck's Breath Mystery Theatre, there's also a Real Audio archive
 Ask a HighEnergy Astronomer  Cosmology Q&A from NASA
 Ask Jack  Weather Q&A
 Ask Science Theater  archive of science Q&A by students at Michigan State University, no longer happening?
 Ask the Space Scientist a mirror of Dr. Sten Odenwald's Ask The Astronomer
 Astronomy Quiz
 Bad Astronomy  entertaining reviews and comments by Phil Plait
 Bad Science  by Alistair B. Fraser, there are also pages on Bad Chemistry and Bad Meteorology7
 BBC SCience and Science Shack  science features from BBC
 The Big List of Puzzle and Riddle Pages
 BrainBlisters  lots of puzzles (formerly BrainBashers)
 The Brain Exerciser  Mathematical riddles
 Brain Food
 Braingle  almost 2000 brain teasers, you can register and submit/rank puzzles
 Brain Teasers from Fitzweb  Javascript puzzles
 The Burr Puzzles Site  online JAVA burr puzzles from IBM, confusing interface
 Card Trick Central  They are all stumpers till you figure it out
 The Case  Court puzzles
 The Challenge Factor  Shockwave puzzles
 Caissa's Web  entry to the Internet Chess Server
 Centre for Innovation in Mathematics Teaching (CIMT) Puzzle Pages  lots of puzzles and some answers
 Clifford Pickover's webpage and discussion group  more than math and science from prolific author
 College Prep Quiz  multisubject quiz for time, miss one and you start over. This is fun!
 Combinatorial Game Theory  links to mathematical treatments of some strategy games
 Conceptual Physics Surf  Q&A and links from author Paul Hewitt
 Cool Puzzles, Games, and Applets  lots of stuff
 Cool Quiz Network  links to many simple online quizzes, eg a Map Quiz. Requires Shockwave, and slow to load.
 Creative Puzzles: alt.brain.teasers archive  The make your own puzzles page is especially good.
 CRpuzzles  traditional pencil and paper puzzles in slick Java format
 Curiouser.co.uk  Rob McMullen's attractive collection of puzzles and paradoxes, worth exploring
 Cut The Knot and the CTK Exchange  math Q&A with some stumpers
 Delphi For Fun  lots of small math and word programs with source code and algorithms
 Devlin's Angle
 The Dilbert Zone Daily Mental Workout and archive  with cartoons!
 Do Science  Food tricks and stumpers by Eric Muller
 Dr. Matrix' Mind Games
 Earth and Sky  transcripts and audio of daily science radio show
 EncycloZine Perplexing Puzzles  impressive Java site with games, puzzles, mazes, illusions, and a wide range of general topics.
 The Engines of Our Ingenuity  elegant musings on technology and ingenuity by John Lienhard of The University of Houston's College of Engineering.
 Erich's Place  Erich Friedman presents lots of tough puzzles, especially in geometrical packing and combinatorial geometry, with a problem archive
 Explorit Science Center  Monthly Science Challenges
 Explorit Science Stumpers  tricky Q&A about science history
 Exploratorium Science Snacks  interesting science demos
 Favorite Math Constants  from Steven Finch and friends
 Figure This! Math Challenges for Families  slick collection of nottoohard stumpers from NSF and National Council of Teachers of Mathematics
 Freeware Games  download links to games and puzzles
 Fun Mathematics Lessons  by Cynthia Lanius, several of these lessons are good stumpers
 Fun With Mathematics!  recreational math from Harry J. Smith
 Fun With Words  serious wordplay, including oxymora
 Games Domain Download Page
 General Chemistry Online FAQ  chemistry Q&A
 Geometry and the Imagination  by John Conway, Peter Doyle, Jane Gilman, and Bill Thurston, interesting puzzles from a master.
 The Geometry Junkyard
 Glossary of Mathematical Mistakes  the raw material of many stumpers, also check the Reader Submitted Examples
 Google Answers  I use Google as the source of all knowledge, but they also offer a payforanser service. You can read old questions and answers for free
 The Greatest Places  Geography stumpers from Dr. Cecil Keen
 Great Moments in Science  large archive of science essays by Karl Kruszelnicki from Australia
 The Grey Labyrinth
 Guinness World Records  slick site with fun trivia
 Hexi  interesting Java strategy game with nice (but distracting) animation. Is there a winning strategy?
 Home of the Underdogs  A place to find abandoned games, including puzzle favorites like Fool's Errand and Scott Kim's great Heaven & Earth
 HotAIR  Web version of Annals of Improbable Reasearch, funny!
 How Stuff Works  useful explanations of things we take for granted, check their Question Archive
 How Things Work  large collection of interesting Q&A hosted by Louis A. Bloomfield of The University of Virginia, be sure to check out the Book Supplements
 Insultingly Stupid Movie Physics  reviews of the physics in popular movies
 Interactive Games on the Web  big list of interactive Web games
 Interactive Mathematics Miscellany and Puzzles
 International Mathematical Olympiad and IMO Problem Archives  tough math problems (and solutions!) from worldclass competition
 The Internet Math Challenge
 Inwit Publishing  writings and links on science topics
 Javalovers Applet Showroom  JAVA puzzles and games
 Jeopardy Online  real games on the Web
 John Rausch's Puzzle World  handcrafted mechanical puzzles for sale and view, also great Stewart Coffin books for free download
 Journal of How Things Work  published by Louis A. Bloomfield of The University of Virginia
 Kasparov Chess  chess portal from Garry Kasparov
 Ken Duisenberg's Puzzle of the Week and Puzzle Links
 Kevin Brown's MathPages  physics too, interesting advanced discussion
 The Last Word  Interesting science Q&A from New Scientist, a great reference
 The Lateral Puzzles Forum  an online newsgroup for tough orginal problems
 The Little Math Puzzle Contest  large collection of school puzzzles (lots of "complete the sequence")
 Logic Mazes  was Robert Abbott's Mazes, hard online mazes, requires JAVA
 The Logic Problems Page  with samples and tutorials on how to solve them
 The MAD Scientist Network  AskAScientist service and huge searchable archive
 MAA Online columns  Columns by Ivars Peterson, Keith Devlin, Frank Morgan, and Alex Bogomolny
 Macalester College Problem of the Week  math problems from email list, also a large archive
 Magic Books  large collection of books on magic with Amazon links
 Magic Squares, Magic Stars & Other Patterns  comprehensive analysis by Harvey Heinz
 Marilyn is Wrong!  Herb Weiner's collection of errors in Marilyn vos Savant's Parade Magazine column, good discussions
 Math Chat  Christian Science Monitor columns by Frank Morgan
 Mathematical Games  nice collection of games, with links for more info
 MatheMUSEments  short pieces by Ivars Peterson
 Math Forum Archive of geometry.puzzles
 The Math in the Movies Page  critical reviews of math in recent movies
 MathLand Archives  Ivars Peterson
 Math Mistakes  Paul Cox' large collection of math mistakes from media, politicians, etc.
 Mathpuzzle.com  lot's of stuff on Ed Pegg's great site!
 The MathSoft Math Puzzle Page
 Math Study Web  lots of links to math sites and software
 Math Trek  Ivars Peterson
 Mensa International
 MerriamWebster's Word Puzzles
 Microsoft Games  play the beast online, including single player games.
 Mike Keith's World of Words & Numbers  interesting math diversions
 Mike's Puzzle of the Week and MARP Archive
 Millennium Prize Problems  seven unsolved math problems worth $1000000 each to solve!
 The Mind Breakers  puzzles and riddles
 Mind Sports International (MSO)  lots of games and puzzles
 MSO Computer Programming Tournament  Monthly challenge with short work time, no source code
 Mudd Math Fun Facts  interesting math topics from Francis Su at Harvey Mudd College
 Name That Plant  Botany stumpers
 National Geographic GeoBee Challenge  daily geography quiz
 National Puzzlers' League
 Newton AskAScientist Archive  huge collection of math/science Q&A
 Newton's Apple: Teacher's Guides
 Nick's Mathematical Puzzles  challenging puzzles from Nick Hobson with excellent answers
 Nikora's Puzzles  large collection with short answers
 NGSEC Security Games  hacking stumpers that get hard, you have to register
 NPR Car Talk Weekly Puzzle
 NPR Sounds Like Science Homepage
 NPR Weekend Edition Sunday Puzzle
 NRICH Online Maths Club  new math games and puzzles every month for all ages
 Ole Miss Math Problem of the Week Contest Page  a real contest with calculators for prizes
 Olympiad Math Madness  hard math stumpers
 OMSI Science Whatzit!  science Q&A from Portland
 Pam's Puzzles  good original puzzles for Cybergrrlz (and smart guyz)!
 Paul Bourke's Puzzles  but no answers!
 Peach's Puzzle Page  puzzles from honor students at Governor Livingston High School (but horrible background!)
 The Physics Question of the Week  new feature from the University of Maryland Department of Physics
 Physics Questions  tricky Q&A from the UWStout Physics Department
 PhysLink: Ask Experts Your Physics Questions  physics Q&A
 Planetarium  a storypuzzle in weekly instalments, looks slick, I haven't started yet
 Please Pass the Science  science Q&A by Scott Berk, "Simplistic, misleading, and somewhat condescending. . . but never boring!"
 Plus Math and NRICH problem archive  monthly math zine with features and puzzles for smart kids from Cambridge University
 POTM  serious programming challenge, check the past problems and the POTM Message Board
 Powered Parachute Question of the Day  specialized but interesting Q&A
 Primrose Puzzles  new puzzles every week
 Problems of the Week  6th grade math problems by David J. Picard
 Psychic Stunts  Michael Daniels' neat collection of math tricks and other oddities to explain
 Puzzle Depot
 Puzzle Fun  polyomino puzzles
 Puzzlemaker  make custom mazes, word search, and crossword puzzles online
 Puzzle Museum  collection of classics
 The Puzzle Ring  webring of puzzle sites
 Puzzles by Puzzability  weekly stumpers, word puzzles
 Puzzle Sequences  from Sloane's OnLine Encyclopedia of Integer Sequences
 Puzzles with a Purpose  good original puzzles and discussions mostly by Paul Niquette
 Quirks and Quarks  Real Audio versions (but no transcripts) of Canadian radio show that gets experts to answer interesting science questions
 Ray Hamel's Crossword Puzzles page  puzzles and huge collection of links
 Reality Carnival  fun and bizarre stuff from Cliff Pickover
 The rec.puzzles Archive  great resource!
 Recreational & Educational Computing (REC)  Puzzles and programs by Dr. Michael W. Ecker, including Mathemagical Black Holes
 Riddle (etc) DuJour  stumpers for cash and prizes
 The Riddler  stumpers for cash and prizes
 Rob's Puzzle Pages Archive  another big list of puzzle links
 Rose Hoffmann  Catholic Memorial High School
 Rubik's Puzzles and  Rubik's cubes and lots more, tough stuff
 The Science Corner  Newspaper columns written by Jim Hunt and Nigel Bunce
 Science Fridays and archive  NPR show by Ira Flatow, hours of RealAudio
 The Science Essays of Dr. Ronald DeLorenzo  interesting short essays about chemistry
 "Science Myths" in K6 Textbooks and Popular culture  from Bill Beaty's Science Hobbyist site
 ScienceNet  huge collection of science Q&A, many of then pleasantly naive.
 Science Netlinks  short science Q&A from AAAS
 Science Playwiths  nice collection of math and science puzzles and activities
 Scientific American: Ask the Experts  science Q&A
 Scott Kim, Puzzle Master  puzzles and products by a master
 Sendafriend Mindbenders  Some remarkable illusions
 Shack's Math Problems  Nice collection of math puzzles with solutions
 The Skinny On...  everyday science column by Hannah Holmes from Discovery.com
 SMARD Puzzles  math puzzles from Australian math teachers group
 SMSU Problem Corner and archives
 The Stone  demo of javascript puzzles
 The Straight Dope  from Cecil Adams, with recent columns. Also check out alt.fan.ceciladams.
 The Straight Dope Message Boards  comments and questions from the Teeming Millions
 STUMPERSL and The Wonderful World of Wombats, the unofficial STUMPERL page  Wombats are real stumpers from reference librarians, huge archive from email group
 Tau Beta Pi Brain Ticklers  tough stumpers from the engineering honor society
 Thinks.Com  1001 uses for a playful brain
 The Trivia Portal  the raw material for stumpers, you can make your own quizes
 The Truth Tree's Math and Logic Board  it's a competition
 20,000 Problems Under the Sea  searchable collection of "Math Treasure on the Web"
 Uvarov Bros. Programming Contest  Another tough contest for programmers from Russia, like POTM
 The Ultimate Puzzle Site!  their name
 Unsolved Mathematics Problems  collected by Steven Finch at MathSoft, lots of links
 uselessfacts.com  the raw material for stumpers
 USA Mathematical Talent Search (USAMTS) Home Page  tough problems from the NSA!
 USGS Science Challenge Questions and Answers  geology Q&A
 Vandelay Games Word Gamers' Paradise  pen and pencil games and great links
 Weather Corner Archives  good collection of weather articles and Q&A by Jan Null
 Weather Doctor  large collection of interesting articles by Keith Heidorn
 Weatherwise Queries  answers to weather stumpers from NOAA meteorologist Thomas Schlatter
 Web Guide  Mathematical Puzzles
 The Why Files  science behind the news, from the University of Wisconsin
 Wind and Current Puzzles  for sailors
 WonderQuest  USA Today weekly science column by April Holladay, and Archive
 Wood Puzzles  info and links on hand made wood puzzles
 The Word Detective  current word trivia and archive
 Word Play  annotated links to pages about having fun with words
 Word Problems For Kids
 Yahoo! Games server  play games on the web
The Usenet is the real internet  the good, the bad, and the ugly. Caveat emptor!
Many of these groups get 100s of posts per day, so they're hard to follow on the Web. I still prefer to use tin in my unix shell account to follow selected groups day by day. But the Web is handy for browsing. You can access and search all 30,000+ Usenet groups at DejaNews. (RemarQ is no longer available.)
Click on the group name to access your own news server, or click on the [web] link to read the group from the DejaNews Web server.
 alt.brain.teasers [web]
 alt.fan.ceciladams [web]
 alt.folklore.urban [web]
 alt.math.recreational [web]
 geometry.puzzles [web]
 japan.puzzle.misc [web]  Japanese, some English
 k12.ed.math [web]
 rec.games.computer.puzzle [web]
 rec.puzzles [web]  and FAQ
 rec.puzzles.crosswords [web]
 relcom.rec.puzzles [web]  Russian, some English
 sci.answers [web]  mostly FAQs for all the sci groups, a great resource!
 sci.astro [web]
 sci.crypt [web]
 sci.lang [web]
 sci.logic [web]
 sci.math [web]
 sci.physics [web]
 sci.skeptic [web]
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